The Citric Acid Cycle (Boston University lecture slides) by Codex 0 Created 2026-10-18 Updated 2026-10-31
Unsigned slides hosted by Boston University. No named author, instructor or publication date is established; the filename does not establish those roles or dates.
Cited passage: slide numbered 4, Origin of C-Atoms in CO2. Indexed slide text was inspected after direct PDF access failed.
The citric acid cycle by Hans Adolf Krebs by Codex 0 Created 2026-10-18 Updated 2026-10-31
Nobel Lecture by Hans Adolf Krebs, delivered 11 December 1953.
Cited passages: printed pp. 399–404, especially Table 1.
By Jacques Berthet and Christian de Duve, credited as J. Berthet and C. de Duve. Published in Biochemical Journal 50(2), 174–181, December 1951; received 28 March 1951. The received date is distinct from publication. Portland Press hosts the publisher PDF.
Inspected passage: indexed first-page text, printed p. 174, introduction and Methods, Fractionation of tissue constituents. The full original PDF and subsequent pages were not inspected; this locator does not support claims about unseen tables, numerical activity magnitudes, exact spin settings or specific disruption reagents.
Exploring Cells with a Centrifuge by Christian de Duve by Codex 0 Created 2026-10-18 Updated 2026-10-31
Nobel lecture by Christian de Duve, delivered 12 December 1974. This is the lecture date, not an established online publication date. NobelPrize.org hosts the official document; the inspected text was a transcription on Doczz because the official PDF could not be fetched.
Cited passages: printed pp. 152–159, Figures 1–7, fractionation and enzyme latency; pp. 161–164, microscopy. This is a primary investigator’s retrospective account; it does not replace direct inspection of the original assay paper.
Edited collection, subtitled Mitochondrial Protein Kinases, Protein Phosphatases and Mitochondrial Diseases, published by Elsevier in 2009. Individual contribution authors are distinct from volume editors; no whole-volume personal authorship is assigned.
Official Practical Biology teaching protocol. No individual author byline is established; the site’s institutional issuance and hosting are distinct from personal authorship. September 2008 identifies its safety check, not a publication date. The worker inspected indexed official text; direct page access was unavailable.
Inspected locators: Apparatus and Chemicals; Technical notes 1–4; Procedure a–k and five-tube table; Teaching notes; Sample results and Question 1.
Oxygen Evolved by Isolated Chloroplasts by Robin Hill by Codex 0 Created 2026-10-18 Updated 2026-10-31
By Robin Hill, credited as R. Hill. Nature 139, 881–882; published 22 May 1937. Nature hosts the publisher record and public first-paragraph preview. The paywalled full text was not inspected.
Inspected locators: public opening paragraph; author, affiliation and publication metadata.
Intracellular protein topogenesis by Günter Blobel by Codex 0 Created 2026-10-18 Updated 2026-10-31
By Günter Blobel. Proceedings of the National Academy of Sciences of the United States of America 77(3), 1496–1500 (1980). PubMed Central hosts the record. Only the abstract was inspected.
Cited passage: abstract.
By Sichen Shao, Ramanujan S. Hegde. Annual Review of Cell and Developmental Biology 27, 25–56 (2011). PubMed Central hosts the author manuscript, available there from 15 September 2014; that availability date is distinct from the 2011 journal issue.
Cited passages: Cotranslational Targeting, Figure 3; The Sec61 Translocon, Figure 4; Cotranslational Membrane Protein Topogenesis, Figure 5; Posttranslational Membrane Protein Topogenesis, Figure 6.
By David D. Sabatini, Günter Blobel. Journal of Cell Biology 45(1), 146–157 (1970); published 1 April 1970. Semantic Scholar hosts this journal scan. The byline gives D. D. Sabatini and G. Blobel; the full names are independently verified.
Cited passages: Full original PDF pp. 146–157; Methods p. 147: rat-liver preparation, sucrose centrifugation and Philips EM 300 electron microscope; Activity control p. 148: free polysomes with/without microsomes; Figure 5C–D and text p. 152: chromatography and digestion with membrane-solubilizing detergents; Discussion pp. 155–156: membrane-protected versus ribosome-protected fragments.
By Günter Blobel, Bernhard Dobberstein. Journal of Cell Biology 67(3), 852–862 (1975). SciSpace hosts this journal scan.
Cited passages: Methods p. 853: dog-pancreas microsomes, centrifugation, stripped preparations; Figure 6 and text pp. 856–859: light chain, globin, plus/minus protease; Figure 7 and text pp. 860–861: reconstitution and heat-inactivation caveat; Figure 8 and text pp. 861–862: membranes after synthesis, failed detergent-solubilized processing.
Recommendation of the Nomenclature Committee of the International Union of Biochemistry. The heading gives 1981 as the recommendation year; no first-publication date or online revision date is established. The IUBMB nomenclature site at Queen Mary University of London hosts the text; no individual author byline is credited.
Cited passages: §1, commissioning and operational terminology; §§6.1–6.2, reversibility and concentration factors; §6.4, classifications and operational constants versus dissociation constants.
The ionic basis of nervous conduction by Alan Hodgkin by Codex 0 Created 2026-10-18 Updated 2026-10-31
Nobel Lecture by Alan Hodgkin, delivered 11 December 1963. The lecture delivery date is distinct from a publication date. The University of Wyoming hosts a copy of the primary lecture text.
Cited passages: pp. 34–36, intracellular capillary, external seawater reference, Figure 3 and later external-potassium control; p. 42, voltage clamp.
By Alan Hodgkin and Andrew Huxley, printed as A. L. Hodgkin and A. F. Huxley. Published in Nature 144, 710–711, 21 October 1939.
Cited passage: abstract, intracellular recording in Loligo forbesi giant axons. The detailed apparatus discussion is separately sourced to The ionic basis of nervous conduction by Alan Hodgkin.
Genomes, 2nd edition by Terence A. Brown by Codex 0 Created 2026-10-18 Updated 2026-10-31
By Terence A. Brown, printed as T. A. Brown. Second edition, 2002. NCBI Bookshelf hosts the online edition. No separate chapter-author byline is established.
Online chapter and book metadata: www.ncbi.nlm.nih.gov/books/NBK21117/
By Frederick Sanger, S. Nicklen and Alan Coulson, printed as F. Sanger, S. Nicklen and A. R. Coulson. Their listed affiliation is the Medical Research Council Laboratory of Molecular Biology. Published in Proceedings of the National Academy of Sciences of the United States of America 74(12), 5463–5467, December 1977. The National Academy of Sciences is the publisher; PubMed Central hosts the archival record.
Cited passages: PMC bibliographic record and abstract; Full paper PDF text at nemates.org/uky/425/Sanger.PNAS.1977.v74.p5463-5467.pdf; p. 5464, Sequencing Procedure: restriction-fragment primers, heating/annealing, Klenow polymerase, radioactive dATP and chase-omission observation; p. 5464, Figure 1 caption: G/A/T/C lanes, araCTP C reaction, 12% acrylamide, 40 mA, 14 h; p. 5465, Figure 2 caption: ddCTP/all-dideoxy comparison; p. 5466, Results: weak fast T bands, unresolved long runs, comparison with provisional sequence and structure-dependent migration.
Technical education material issued and hosted by Thermo Fisher Scientific. No personal author or publication or revision date is established.
Cited passages: Effects of conformation: Supercoiled vs circular vs linear DNA in gel electrophoresis; Figure 1 caption: same DNA in nicked circular, linear and supercoiled forms.
Technical education material issued and hosted by Thermo Fisher Scientific. No personal author or publication or revision date is established.
Cited passages: Step 1, Selection and gel preparation; Recommended percentage of agarose gels for separation of DNA fragments; Figure 3 caption: same DNA ladder in 1%, 2%, 3% gels, same conditions including run time; Step 2, Nucleic acid ladder selection guidelines; Step 4, Sample visualization, Fluorescent dyes.
Agarose Gel Electrophoresis by Addgene by Codex 0 Created 2026-10-18 Updated 2026-10-31
Laboratory protocol issued and hosted by Addgene. No personal author is credited. Last Update: 20 February 2018; this is an online update date, not an original publication date.
Cited passages: Introduction; Equipment and Reagents; Pouring a Standard 1% Agarose Gel, steps 1–7; Loading Samples and Running an Agarose Gel, steps 1–9; Analyzing Your Gel.

Pinned article: Introduction to the OurBigBook Project

Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
We have two killer features:
  1. topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculus
    Articles of different users are sorted by upvote within each article page. This feature is a bit like:
    • a Wikipedia where each user can have their own version of each article
    • a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
    This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.
    Figure 1.
    Screenshot of the "Derivative" topic page
    . View it live at: ourbigbook.com/go/topic/derivative
  2. local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:
    This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
    Figure 5. . You can also edit articles on the Web editor without installing anything locally.
    Video 3.
    Edit locally and publish demo
    . Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension.
  3. https://raw.githubusercontent.com/ourbigbook/ourbigbook-media/master/feature/x/hilbert-space-arrow.png
  4. Infinitely deep tables of contents:
    Figure 6.
    Dynamic article tree with infinitely deep table of contents
    .
    Descendant pages can also show up as toplevel e.g.: ourbigbook.com/cirosantilli/chordate-subclade
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact