A global reference for human genetic variation (opens the original in a new tab)
1000 Genomes Project Consortium, et al. (2015). Nature 526:68-74.
Peer-reviewedPrimary research
Source library
Every source cited on Helicase: 276 journal articles, books, agency pages and databases. Each one was checked against PubMed, Crossref, DataCite, NCBI or the publisher’s page before it was cited, and each links to the original.
All sources
Experiments on Plant Hybrids by Gregor Mendel (opens the original in a new tab)
Abbott S, Fairbanks DJ (2016). Genetics 204:407-422.
A modern English translation of Mendel's 1866 paper.
Peer-reviewedTranslationMolecular Biology of the Cell (4th edition) (opens the original in a new tab)
Alberts B, Johnson A, Lewis J, et al. (2002). Garland Science.
Free to read on NCBI Bookshelf. Standard reference for cell structure and molecular biology.
TextbookEducationalProtection afforded by sickle-cell trait against subtertian malarial infection (opens the original in a new tab)
Allison AC (1954). British Medical Journal 1:290-294.
Early evidence that carrying one sickle cell allele protects against severe malaria.
Historical paperPrimary researchBasic local alignment search tool (opens the original in a new tab)
Altschul SF, Gish W, Miller W, et al. (1990). Journal of Molecular Biology 215:403-410.
BLAST, the fast heuristic search used to compare sequences against databases.
Peer-reviewedPrimary researchPrinciples that govern the folding of protein chains (opens the original in a new tab)
Anfinsen CB (1973). Science 181:223-230.
Nobel lecture: a protein's sequence determines its folded structure.
Historical paperPrimary researchSearch-and-replace genome editing without double-strand breaks or donor DNA (opens the original in a new tab)
Anzalone AV, Randolph PB, Davis JR, et al. (2019). Nature 576:149-157.
Peer-reviewedPrimary researchAnalysis of the genome sequence of the flowering plant Arabidopsis thaliana (opens the original in a new tab)
Arabidopsis Genome Initiative (2000). Nature 408:796-815.
Peer-reviewedPrimary researchEndosymbiosis and eukaryotic cell evolution (opens the original in a new tab)
Archibald JM (2015). Current Biology 25:R911-R921.
Peer-reviewedReviewStudies on the chemical nature of the substance inducing transformation of pneumococcal types (opens the original in a new tab)
Avery OT, MacLeod CM, McCarty M (1944). Journal of Experimental Medicine 79:137-158.
Evidence that DNA is the transforming principle that carries hereditary information.
Historical paperPrimary researchEqual numbers of neuronal and nonneuronal cells make the human brain an isometrically scaled-up primate brain (opens the original in a new tab)
Azevedo FA, Carvalho LR, Grinberg LT, et al. (2009). Journal of Comparative Neurology 513:532-541.
Counted about 86 billion neurons and a similar number of non-neuronal cells in adult male brains.
Peer-reviewedPrimary researchEfficacy and safety of the mRNA-1273 SARS-CoV-2 vaccine (opens the original in a new tab)
Baden LR, El Sahly HM, Essink B, et al. (2021). New England Journal of Medicine 384:403-416.
Peer-reviewedClinical trialLysosomes as dynamic regulators of cell and organismal homeostasis (opens the original in a new tab)
Ballabio A, Bonifacino JS (2020). Nature Reviews Molecular Cell Biology 21:101-118.
Peer-reviewedReviewExpression of animal virus genomes (opens the original in a new tab)
Baltimore D (1971). Bacteriological Reviews 35:235-241.
Classified viruses by how their genomes produce mRNA.
Historical paperReviewThe complete atomic structure of the large ribosomal subunit at 2.4 Å resolution (opens the original in a new tab)
Ban N, Nissen P, Hansen J, et al. (2000). Science 289:905-920.
Peer-reviewedPrimary researchThe global mass and average rate of rubisco (opens the original in a new tab)
Bar-On YM, Milo R (2019). Proceedings of the National Academy of Sciences 116:4738-4743.
Estimates about 0.7 gigatonnes of rubisco on Earth, mostly in land plant leaves.
Peer-reviewedPrimary researchMedical Microbiology (4th edition) (opens the original in a new tab)
Baron S (editor) (1996). University of Texas Medical Branch at Galveston.
Free to read on NCBI Bookshelf. Older edition; check newer sources for current treatment information.
TextbookEducationalCRISPR provides acquired resistance against viruses in prokaryotes (opens the original in a new tab)
Barrangou R, Fremaux C, Deveau H, et al. (2007). Science 315:1709-1712.
Peer-reviewedPrimary researchThe path of carbon in photosynthesis (opens the original in a new tab)
Bassham JA, Benson AA, Calvin M (1950). Journal of Biological Chemistry 185:781-787.
Historical paperPrimary researchSummary statement of the Asilomar conference on recombinant DNA molecules (opens the original in a new tab)
Berg P, Baltimore D, Brenner S, et al. (1975). Proceedings of the National Academy of Sciences 72:1981-1984.
Scientists' own guidelines for the safe conduct of recombinant DNA research.
Peer-reviewedPerspectiveThe Protein Data Bank (opens the original in a new tab)
Berman HM, Westbrook J, Feng Z, et al. (2000). Nucleic Acids Research 28:235-242.
Peer-reviewedPrimary researchAn estimation of the number of cells in the human body (opens the original in a new tab)
Bianconi E, Piovesan A, Facchin F, et al. (2013). Annals of Human Biology 40:463-471.
Organ-by-organ estimate of about 3.72 × 10^13 cells.
Peer-reviewedPrimary researchThe complete genome sequence of Escherichia coli K-12 (opens the original in a new tab)
Blattner FR, Plunkett G 3rd, Bloch CA, et al. (1997). Science 277:1453-1462.
Peer-reviewedPrimary researchLong-lasting potentiation of synaptic transmission in the dentate area of the anaesthetized rabbit following stimulation of the perforant path (opens the original in a new tab)
Bliss TV, Lomo T (1973). Journal of Physiology 232:331-356.
Historical paperPrimary researchHistorical contingency and the evolution of a key innovation in an experimental population of Escherichia coli (opens the original in a new tab)
Blount ZD, Borland CZ, Lenski RE (2008). Proceedings of the National Academy of Sciences 105:7899-7906.
Peer-reviewedPrimary researchThe ATP synthase: a splendid molecular machine (opens the original in a new tab)
Boyer PD (1997). Annual Review of Biochemistry 66:717-749.
Editorially reviewedReviewThermus aquaticus gen. n. and sp. n., a nonsporulating extreme thermophile (opens the original in a new tab)
Brock TD, Freeze H (1969). Journal of Bacteriology 98:289-297.
Isolation of the hot-spring bacterium later used as the source of Taq polymerase.
Historical paperPrimary researchEvolutionary history of mycorrhizal symbioses and global host plant diversity (opens the original in a new tab)
Brundrett MC, Tedersoo L (2018). New Phytologist 220:1108-1115.
Peer-reviewedReviewA brief history of synthetic biology (opens the original in a new tab)
Cameron DE, Bashor CJ, Collins JJ (2014). Nature Reviews Microbiology 12:381-390.
Peer-reviewedReviewProkaryotic cells in the hydrothermal vent tube worm Riftia pachyptila Jones: possible chemoautotrophic symbionts (opens the original in a new tab)
Cavanaugh CM, Gardiner SL, Jones ML, et al. (1981). Science 213:340-342.
Peer-reviewedPrimary researchBiosafety in Microbiological and Biomedical Laboratories (BMBL), 6th Edition (opens the original in a new tab)
Centers for Disease Control and Prevention, National Institutes of Health. CDC Laboratories. U.S. Department of Health and Human Services.
The U.S. reference for laboratory biosafety practice.
GuidanceGovernment sourceAbout Antimicrobial Resistance (opens the original in a new tab)
Centers for Disease Control and Prevention (2025). cdc.gov. U.S. Centers for Disease Control and Prevention. Published 2025-01-31.
Fact sheetGovernment sourceDeoxyribonucleic acid polymerase from the extreme thermophile Thermus aquaticus (opens the original in a new tab)
Chien A, Edgar DB, Trela JM (1976). Journal of Bacteriology 127:1550-1557.
Peer-reviewedPrimary researchConstruction of biologically functional bacterial plasmids in vitro (opens the original in a new tab)
Cohen SN, Chang AC, Boyer HW, et al. (1973). Proceedings of the National Academy of Sciences 70:3240-3244.
Recombinant plasmids that replicate in bacteria.
Historical paperPrimary researchMultiplex genome engineering using CRISPR/Cas systems (opens the original in a new tab)
Cong L, Ran FA, Cox D, et al. (2013). Science 339:819-823.
Peer-reviewedPrimary researchSelective bird predation on the peppered moth: the last experiment of Michael Majerus (opens the original in a new tab)
Cook LM, Grant BS, Saccheri IJ, et al. (2012). Biology Letters 8:609-612.
Peer-reviewedPrimary researchThe Cell: A Molecular Approach (2nd edition) (opens the original in a new tab)
Cooper GM (2000). Sinauer Associates.
Free to read on NCBI Bookshelf.
TextbookEducationalSubmarine thermal springs on the Galápagos Rift (opens the original in a new tab)
Corliss JB, Dymond J, Gordon LI, et al. (1979). Science 203:1073-1083.
Report of the first hydrothermal vent communities observed on the sea floor.
Peer-reviewedPrimary researchGeneral nature of the genetic code for proteins (opens the original in a new tab)
Crick FH, Barnett L, Brenner S, et al. (1961). Nature 192:1227-1232.
Frameshift experiments indicating the code is read in non-overlapping triplets.
Historical paperPrimary researchCentral dogma of molecular biology (opens the original in a new tab)
Crick F (1970). Nature 227:561-563.
Crick's own statement of what the central dogma does and does not claim.
Historical paperPerspectiveA Devonian tetrapod-like fish and the evolution of the tetrapod body plan (opens the original in a new tab)
Daeschler EB, Shubin NH, Jenkins FA Jr (2006). Nature 440:757-763.
Description of Tiktaalik roseae.
Peer-reviewedPrimary researchExploring cells with a centrifuge (opens the original in a new tab)
de Duve C (1975). Science 189:186-194.
Nobel lecture describing the discovery of lysosomes.
Peer-reviewedReviewThe structure of the potassium channel: molecular basis of K+ conduction and selectivity (opens the original in a new tab)
Doyle DA, Morais Cabral J, Pfuetzner RA, et al. (1998). Science 280:69-77.
Peer-reviewedPrimary researchA synthetic oscillatory network of transcriptional regulators (opens the original in a new tab)
Elowitz MB, Leibler S (2000). Nature 403:335-338.
The repressilator: three repressors wired in a loop produce oscillations.
Peer-reviewedPrimary researchAlphaFold Protein Structure Database (opens the original in a new tab)
EMBL-EBI, Google DeepMind. alphafold.ebi.ac.uk. EMBL's European Bioinformatics Institute.
DatabaseResearch instituteEMBL's European Bioinformatics Institute (EMBL-EBI) (opens the original in a new tab)
EMBL-EBI. ebi.ac.uk.
DatabaseResearch instituteSea otters: their role in structuring nearshore communities (opens the original in a new tab)
Estes JA, Palmisano JF (1974). Science 185:1058-1060.
Historical paperPrimary researchWhat is Gene Therapy? (opens the original in a new tab)
U.S. Food and Drug Administration. fda.gov. U.S. Food and Drug Administration.
ReferenceGovernment sourceEducationalFDA Approves First COVID-19 Vaccine (opens the original in a new tab)
U.S. Food and Drug Administration (2021). FDA News Release. U.S. Food and Drug Administration. Published 2021-08-23.
Full approval of Comirnaty, an mRNA vaccine, for people 16 and older.
Regulatory noticeGovernment sourceFDA Approves First Gene Therapies to Treat Patients with Sickle Cell Disease (opens the original in a new tab)
U.S. Food and Drug Administration (2023). FDA News Release. U.S. Food and Drug Administration. Published 2023-12-08.
Approval of Casgevy (CRISPR-based) and Lyfgenia for patients 12 and older.
Regulatory noticeGovernment sourceEurope PMC in 2020 (opens the original in a new tab)
Ferguson C, Araújo D, Faulk L, et al. (2021). Nucleic Acids Research 49:D1507-D1514.
The literature database that powers this site's research search.
Peer-reviewedPrimary researchPrimary production of the biosphere: integrating terrestrial and oceanic components (opens the original in a new tab)
Field CB, Behrenfeld MJ, Randerson JT, et al. (1998). Science 281:237-240.
Global net primary production of about 105 petagrams of carbon per year, split roughly evenly between land and ocean.
Peer-reviewedPrimary researchPotent and specific genetic interference by double-stranded RNA in Caenorhabditis elegans (opens the original in a new tab)
Fire A, Xu S, Montgomery MK, et al. (1998). Nature 391:806-811.
Discovery of RNA interference.
Peer-reviewedPrimary researchHow FDA approved chymosin: a case history (opens the original in a new tab)
Flamm EL (1991). Bio/Technology (now Nature Biotechnology) 9:349-351.
Regulatory history of a recombinant enzyme used in cheesemaking.
Editorially reviewedPerspectiveOn the antibacterial action of cultures of a penicillium, with special reference to their use in the isolation of B. influenzae (opens the original in a new tab)
Fleming A (1929). British Journal of Experimental Pathology 10:226-236.
The original report of penicillin's antibacterial activity.
Historical paperPrimary researchCell mechanics and the cytoskeleton (opens the original in a new tab)
Fletcher DA, Mullins RD (2010). Nature 463:485-492.
Peer-reviewedReviewPresent and future global distributions of the marine Cyanobacteria Prochlorococcus and Synechococcus (opens the original in a new tab)
Flombaum P, Gallegos JL, Gordillo RA, et al. (2013). Proceedings of the National Academy of Sciences 110:9824-9829.
Peer-reviewedPrimary researchCRISPR-Cas9 gene editing for sickle cell disease and β-thalassemia (opens the original in a new tab)
Frangoul H, Altshuler D, Cappellini MD, et al. (2021). New England Journal of Medicine 384:252-260.
Peer-reviewedClinical trialMolecular configuration in sodium thymonucleate (opens the original in a new tab)
Franklin RE, Gosling RG (1953). Nature 171:740-741.
X-ray diffraction evidence for a helical DNA structure, published alongside Watson and Crick.
Historical paperPrimary researchConstruction of a genetic toggle switch in Escherichia coli (opens the original in a new tab)
Gardner TS, Cantor CR, Collins JJ (2000). Nature 403:339-342.
Two mutually repressing genes form a switch with two stable states.
Peer-reviewedPrimary researchGenome sequence of the human malaria parasite Plasmodium falciparum (opens the original in a new tab)
Gardner MJ, Hall N, Fung E, et al. (2002). Nature 419:498-511.
Peer-reviewedPrimary researchCreation of a bacterial cell controlled by a chemically synthesized genome (opens the original in a new tab)
Gibson DG, Glass JI, Lartigue C, et al. (2010). Science 329:52-56.
Peer-reviewedPrimary researchExpression in Escherichia coli of chemically synthesized genes for human insulin (opens the original in a new tab)
Goeddel DV, Kleid DG, Bolivar F, et al. (1979). Proceedings of the National Academy of Sciences 76:106-110.
Peer-reviewedPrimary researchLife with 6000 genes (opens the original in a new tab)
Goffeau A, Barrell BG, Bussey H, et al. (1996). Science 274:546, 563-567.
The first complete genome of a eukaryote, baker's yeast.
Peer-reviewedPrimary researchGlobal burden of bacterial antimicrobial resistance in 2019: a systematic analysis (opens the original in a new tab)
Antimicrobial Resistance Collaborators (2022). The Lancet 399:629-655.
Modelled estimate: 1.27 million deaths directly attributable to bacterial AMR in 2019.
Peer-reviewedSystematic analysisEvolution of character displacement in Darwin's finches (opens the original in a new tab)
Grant PR, Grant BR (2006). Science 313:224-226.
Peer-reviewedPrimary researchMendelian proportions in a mixed population (opens the original in a new tab)
Hardy GH (1908). Science 28:49-50.
Historical paperTheory or modelChaos in a three-species food chain (opens the original in a new tab)
Hastings A, Powell T (1991). Ecology 72(3):896-903.
A three-level food chain model of the same form as our Ecosystem Simulator: logistic plants and saturating feeding rates.
Peer-reviewedTheory or modelAmino acid substitution matrices from protein blocks (opens the original in a new tab)
Henikoff S, Henikoff JG (1992). Proceedings of the National Academy of Sciences 89:10915-10919.
Peer-reviewedPrimary researchIndependent functions of viral protein and nucleic acid in growth of bacteriophage (opens the original in a new tab)
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Historical paperPrimary researchThe role of stomata in sensing and driving environmental change (opens the original in a new tab)
Hetherington AM, Woodward FI (2003). Nature 424:901-908.
Peer-reviewedReviewStructure, function and diversity of the healthy human microbiome (opens the original in a new tab)
Human Microbiome Project Consortium (2012). Nature 486:207-214.
Peer-reviewedPrimary researchDoes restoring apex predators to food webs restore ecosystems? Large carnivores in Yellowstone as a model system (opens the original in a new tab)
Hobbs NT, Johnston DB, Marshall KN, et al. (2024). Ecological Monographs 94.
Field experiments questioning how fully wolf reintroduction restored Yellowstone's streamside vegetation.
Peer-reviewedPrimary researchA quantitative description of membrane current and its application to conduction and excitation in nerve (opens the original in a new tab)
Hodgkin AL, Huxley AF (1952). Journal of Physiology 117:500-544.
The equations behind this site's action potential simulator.
Historical paperPrimary researchSome characteristics of simple types of predation and parasitism (opens the original in a new tab)
Holling CS (1959). The Canadian Entomologist 91:385-398.
Introduced the functional response: how a predator's feeding rate saturates as prey become abundant.
Historical paperPrimary researchGlobal warming and recurrent mass bleaching of corals (opens the original in a new tab)
Hughes TP, Kerry JT, Álvarez-Noriega M, et al. (2017). Nature 543:373-377.
Peer-reviewedPrimary researchDesign and synthesis of a minimal bacterial genome (opens the original in a new tab)
Hutchison CA 3rd, Chuang RY, Noskov VN, et al. (2016). Science 351:aad6253.
Peer-reviewedPrimary researchEvidence for saltatory conduction in peripheral myelinated nerve fibres (opens the original in a new tab)
Huxley AF, Stämpfli R (1949). Journal of Physiology 108:315-339.
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Imachi H, Nobu MK, Nakahara N, et al. (2020). Nature 577:519-525.
Peer-reviewedPrimary researchGene mutations in human haemoglobin: the chemical difference between normal and sickle cell haemoglobin (opens the original in a new tab)
Ingram VM (1957). Nature 180:326-328.
Traced sickle cell hemoglobin to a single amino acid change.
Historical paperPrimary researchNature's Dangerous Decline 'Unprecedented'; Species Extinction Rates 'Accelerating' (opens the original in a new tab)
IPBES (2019). IPBES media release. Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services. Published 2019-05-06.
Announces the 2019 global assessment, including its estimate of around 1 million species threatened with extinction.
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First report of the unusual repeated sequences later named CRISPR.
Peer-reviewedPrimary researchBiochemical method for inserting new genetic information into DNA of Simian Virus 40: circular SV40 DNA molecules containing lambda phage genes and the galactose operon of Escherichia coli (opens the original in a new tab)
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The lac operon model of gene regulation.
Historical paperPrimary researchImmunobiology: The Immune System in Health and Disease (5th edition) (opens the original in a new tab)
Janeway CA Jr, Travers P, Walport M, et al. (2001). Garland Science.
Free to read on NCBI Bookshelf.
TextbookEducationalA programmable dual-RNA-guided DNA endonuclease in adaptive bacterial immunity (opens the original in a new tab)
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Showed Cas9 can be programmed with guide RNA to cut chosen DNA sequences.
Peer-reviewedPrimary researchHuman insulin from recombinant DNA technology (opens the original in a new tab)
Johnson IS (1983). Science 219:632-637.
Peer-reviewedReviewHighly accurate protein structure prediction with AlphaFold (opens the original in a new tab)
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Peer-reviewedReviewSuppression of RNA recognition by Toll-like receptors: the impact of nucleoside modification and the evolutionary origin of RNA (opens the original in a new tab)
Karikó K, Buckstein M, Ni H, et al. (2005). Immunity 23:165-175.
Modified nucleosides reduce innate immune recognition of synthetic mRNA.
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Köhler G, Milstein C (1975). Nature 256:495-497.
The hybridoma method for monoclonal antibodies.
Peer-reviewedPrimary researchProgrammable editing of a target base in genomic DNA without double-stranded DNA cleavage (opens the original in a new tab)
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Peer-reviewedPrimary researchApplication of a theory of enzyme specificity to protein synthesis (opens the original in a new tab)
Koshland DE (1958). Proceedings of the National Academy of Sciences 44:98-104.
The induced-fit model of enzyme-substrate binding.
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Real population cycles involve food, predators and more; simple two-species models leave much out.
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Peer-reviewedPrimary researchEnhancement of antitumor immunity by CTLA-4 blockade (opens the original in a new tab)
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Peer-reviewedPrimary researchThe dorsoventral regulatory gene cassette spätzle/Toll/cactus controls the potent antifungal response in Drosophila adults (opens the original in a new tab)
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Historical paperPrimary researchScaling laws predict global microbial diversity (opens the original in a new tab)
Locey KJ, Lennon JT (2016). Proceedings of the National Academy of Sciences 113:5970-5975.
Peer-reviewedTheory or modelRNA-guided human genome engineering via Cas9 (opens the original in a new tab)
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Peer-reviewedPrimary researchQuantification of bioluminescence from the surface to the deep sea demonstrates its predominance as an ecological trait (opens the original in a new tab)
Martini S, Haddock SHD (2017). Scientific Reports 7:45750.
In 17 years of video off California, 76% of observed animals were capable of bioluminescence.
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Peer-reviewedClinical trialA new method for sequencing DNA (opens the original in a new tab)
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Peer-reviewedPrimary researchThe origin and behavior of mutable loci in maize (opens the original in a new tab)
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Description of transposable genetic elements.
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MedlinePlus Genetics. MedlinePlus Genetics. U.S. National Library of Medicine, NIH.
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MedlinePlus Genetics. MedlinePlus Genetics. U.S. National Library of Medicine, NIH.
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Peer-reviewedClinical trialThe replication of DNA in Escherichia coli (opens the original in a new tab)
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Showed that DNA replication is semiconservative.
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Michaelis L, Menten ML, Johnson KA, et al. (2011). Biochemistry 50:8264-8269.
Peer-reviewedTranslationHow big is an E. coli cell and what is its mass? (opens the original in a new tab)
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TextbookEducationalHow big are viruses? (opens the original in a new tab)
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TextbookEducationalCell Biology by the Numbers (opens the original in a new tab)
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