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Property Organism Value Units ID Details
Typical single ion channel conductance (how many ions per second can pass through the channel) Generic ≥10^6 ions/sec 110725 Cahalan MD, Wulff H,...
T cell membrane resting potential vertebrates ~ -50 mV 110726 Cahalan MD, Wulff H,...
Calculated rate of cell production by pre-B cell Mouse Mus musculus ~0.5e+8 B cells/whole bone marrow/day 107911 Opstelten D, Osmond DG....
Survival time after last cell division of T cell not recognizing MHC molecules Mouse Mus musculus <= (≤4) days 102643 Charles A. Janeway Jr....
Fasting insulin concentration in blood of healthy lean individuals Human Homo sapiens 18 - 90 pmol/L 109964 Wilcox G. Insulin and...
Time of divergence of organisms in which complement-like genes are present Unspecified >1.3 billion years ago 117097 Klos A, Wende E, Wareham KJ...
Average number of TSPs [thymus-seeding progenitors] that can colonize a non-irradiated wild-type thymus at a given time Mouse Mus musculus 10 TSPs 113824 Krueger A, Ziętara N...
An individual thymus acquires maximum receptivity for colonization every Mouse Mus musculus 10 - 14 days 113825 Krueger A, Ziętara N...
Estimated overall efficiency of peptide generation for MHC class I molecules is on the order of Unspecified 1 per 10,000 proteins degraded 113820 Yewdell JW, Reits E,...
Number of different receptors (on lymphocytes) that are expressed at any time Unspecified 1e+7 different receptors 109932 Alan S. Perelson, Ge´rard...
Fraction of bacterioplanktonic population in fresh water system Bacteria Polynucleobacter necessarius asymbioticus 20 (<1 to 70) % 107567 Hahn MW, Scheuerl T,...
Km for high affinity transport system for betaine Bacteria Chromohalobacter salexigens 3.06 µM 102331 Vargas C, Argandona M...
The giant fiber system-afferent and efferent connections Arthropods Table - link N/A 110603 Theodore Holmes Bullock...
Total surface area of the lacuno-canalicular system Human Homo sapiens 215 (Table - link) m^2 111551 Buenzli PR, Sims NA....
Fraction of ATP produced in central nervous system Unspecified mitochondria (using the citric acid cycle followed by oxidative phosphorylation) ~93: glycolysis ~7 % 111657 Harris JJ, Jolivet R...
Number of bacterial species in colon Mammals >400 species 112893 Macpherson AJ, Harris...
Number of thymocytes in thymus of young adult Mouse Mus musculus 10^8-2х10^8 cells 103580 Kenneth M. Murphy, Paul...
Number of pancreatic islets (islets of Langerhans) in pancreas Human Homo sapiens ~1,000,000 pancreatic islets/pancreas 109966 Rorsman P, Braun M. ...
Usual affinity between immunoglobulins and their specific antigens Unspecified 10^4 - 10^7 mol/liter 117059 Saji F, Samejima Y, Kamiura S...
Proportion of natural MHC class II ligands that are derived from cytosolic and nuclear proteins vertebrates ≤20 % 113838 Schmid D, Pypaert M,...