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Property Organism Value Units ID Details
Number of homeobox genes in most vertebrates Vertebrates ~250 homeobox genes 116965 Bürglin TR, Affolter...
The erythrocyte sizes in various vertebrates Vertebrates Table - link µm 117074 Arikan, Hüseyin, Çiçek...
Estimates of the biosphere's domesticated vertebrates biomass vertebrates 100 to 120 Table - link Mt C 109624 Vaclav Smil, The Earth's...
Distribution of pancreatic RNase in vertebrates Vertebrates Table - link N/A 102488 Neil V. Ross. 2006 'Geometric...
Types of Calcium channels in vertebrates Vertebrates Table - link N/A 106546 Hille B., Ion channels...
Number and size of red blood cells in selected vertebrates vertebrates Table - link N/A 109097 Amazing numbers in biology...
Estimates of the biosphere's land wild vertebrates biomass vertebrates <5 Table - link Mt C 109622 Vaclav Smil, The Earth's...
Number of humoral and cell membrane proteins that are involved in the complement system in higher vertebrates Vertebrates >30 proteins 117099 Pinto MR, Melillo D,...
Ranges of nuclear volumes and DNA contents within the major classes of vertebrates vertebrates Table - link N/A 107794 Conger AD, Clinton JH....
Percentage of decreasing species classified by IUCN (International Union for Conservation of Nature) as "endangered" or "low concern" in terrestrial vertebrates Vertebrates Table - link % 117266 Ceballos G, Ehrlich PR...
Time of transposition event that gave rise to the predecessors of the rearranging antigen-binding receptors of the jawed vertebrates Vertebrates >500 Million years ago 117054 Litman GW, Cannon JP...
Extinction rates calculated by cohort analysis and fractions of species that are critically endangered (CR) vertebrates Table - link N/A 113448 Pimm SL et al., The ...
Estimated in vivo activities and copy number of molecules involved in MHC class-I-antigen presentation vertebrates Table - link N/A 113775 Yewdell JW, Reits E,...
Size of pores formed by claudins (Transmembrane proteins of the tight junction (TJ)) present in brain endothelial cells Vertebrates ~10 Å 117109 Stamatovic SM, Keep RF...
Axon diameter in both vertebrates and invertebrates Various 0.5 to 30 μm 108980 Zalc B, Goujet D, Colman...
Characteristics of the Escherichia coli in the microbiota Vertebrates Table - link N/A 116913 Tenaillon O, Skurnik D...
Presence of lamellar branching in corneal stroma compared to that of fish Vertebrates in amphibians 2 times that of fish: in birds >10 times that of fish times of lamellar branching in fish 117198 Koudouna E et al., Evolution...
Number of subtypes of retinal neurons Vertebrates ~60 subtypes 117170 Bloomfield SA, Völgyi...
Fraction of surface area of neuron that is covered by synapses vertebrates <10 % 115052 Krnjević, K. "Chemical...
Content of structural proteins of vertebrate skeletal muscle Vertebrates Table - link N/A 115489 Clive. R. Bagshaw, Muscle...