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Property Organism Value Units ID Details
P50 of hemoglobin at pH 7.4 and 20°C Water buffalo Bubalus bubalis 7.1 mmHg 109696 Giardina B, Arevalo F...
Comparative cellular composition of the brain of the tree shrew and six primate species Mammals Table - link N/A 110871 Herculano-Houzel S, Collins...
Cellular composition of primate brains Mammals Table - link N/A 110872 Herculano-Houzel S, Collins...
Sensing range for toothed whales Mammals Table - link N/A 112675 Andersen KH et al., ...
Glial cell density in grey matter of brain Human Homo sapiens 30,000 - 60,000 cells/mm^3 115169 Haug H. Brain sizes, surfaces...
Variability of size in brain (possibly only in forebrain) Human Homo sapiens ~15 - 20 % above and below the mean values 114631 Haug H. Brain sizes, surfaces...
Increase in density of neurons in cortex of females compared with males Human Homo sapiens ~4,000 neurons/mm^3 higher in the female than in the male 115166 Haug H. Brain sizes, surfaces...
Degree of variability in macroscopic sizes of brain and cortex and in microscopic neuronal sizes Human Homo sapiens 15 - 20 % above and below the mean 115165 Haug H. Brain sizes, surfaces...
Volume of erythrocyte Human Homo sapiens 97 µm^3 101711 Frank AO, Chuong CJ,...
Oxygen equilibrium characteristics of hemoglobin Red stingray Dasyatis akajei Table - link N/A 109643 Chong KT, Miyazaki G...
Mean retention time of food in the digestive tract of various species Various Table - link N/A 101930 Kenneth Blaxter. Energy...
Concentration of glutamate in forebrain and cerebellum (about 50% less in various parts of brain stem) Unspecified 10 µmol/g 115056 Krnjević, K. "Chemical...
Volume of erythrocyte Human Homo sapiens ≈90 µm^3 115152 Wagner BA, Venkataraman S...
Diameter and Volume of the eyeball in Selected Animals Eukaryotes Table - link N/A 104072 Amazing numbers in biology...
Composition and energy content of milk Mammals Table - link N/A 109498 Kleiber M. The fire of...
Sizes and masses of organisms Various Table - link N/A 109595 Vaclav Smil, The Earth's...
C02/02 specificity values [VcKo/VoKc] for Rubisco enzymes isolated from diverse species of the plant kingdom Various Table - link unitless 111955 William L. Ogren, Photo...
Dates of evolutionary branching points of the key genome model organisms based on fossil evidence Various Graph - link N/A 105149 Donoghue PC, Benton MJ....
Brain weight, encephalization quotient and number of cortical neurons in selected mammals Mammals Table - link Unitless 109326 Roth G, Dicke U. Evolution...
Number and size of red blood cells in selected vertebrates vertebrates Table - link N/A 109097 Amazing numbers in biology...