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Property Organism Value Units ID Details
Diameter of hepatocyte nucleus Rat Rattus norvegicus 8 µm 104261 Peters R. Nucleo-cytoplasmic...
Chromosome number (2n) Mouse Mus musculus 40 unitless 100335 Animal Genome Size Database...
Velocity of action potential in giant fiber at 10 to 15°C Catfish Ameiurus 50 to 60 m/s 108967 Bullock TH, Horridge...
Velocity of action potential in giant fiber at 20 to 25°C Fish Carp Cyprinus 55 to 63 m/s 108968 Bullock TH, Horridge...
Velocity of action potential in giant fiber at 20°C African lungfish Protopterus 19 m/s 108969 Bullock TH, Horridge...
Velocity of action potential in dorsal roots Fish skate Raja 8 to 36 m/s 108970 Bullock TH, Horridge...
Velocity of action potential in giant fiber at 20°C Lamprey Entosphenus 5 m/s 108971 Bullock TH, Horridge...
Axon diameter in the optic nerve North American opossum Didelphis virginiana myelinated 0.3-6.7µm (mean 1.6µm): unmyelinated 0.2-1.6µm (mean 0.6µm) µm 112118 Kirby MA, Clift-Forsberg L...
Ejection velocity of zig-zagged silken mixture of glue and venom (to tether prey at a distance) Spitting spider Scytodes thoracica ≤28.8 m/s 116192 Mammola S, Michalik P...
Average dimensions of neuronal soma of trigeminal mesencephalic nucleus in adult Syrian Hamster Mesocricetus auratus diameter 34.1µm: surface area 3,651µm^2: cytoplasmic volume 20,569µm^3 N/A 112113 Alley KE. Morphogenesis...
Diameter of soma of neuron Tobacco hawkmoth Manduca sexta 22 - 24 µm 112116 Tublitz NJ, Truman JW....
Number of birds lost to predation by domestic cats in the USA each year according to different sources Biosphere Winkler et al., 80 million birds/year: Walsberg 319 - 638 birds/year 116947 Kevin J. Gaston & Tim...
Number of birds lost to predation by domestic cats each year Biosphere in Britain ≥20 million birds/year: in USA >80 million birds/year 116948 Winkler, K., Fall, B.A....
Percent body fat at birth of 15 mammalian species Mammals Figure - link % 113759 Leonard WR, Robertson ML...
Rate of axoplasmic transport in sciatic nerve Mammals dog 260mm/day: cat 431mm/day mm/day 112226 Ochs S. Rate of fast...
Beta-catenin concentration in early embryos African clawed frog Xenopus laevis 35 nM 101952 Lee E, Salic A, Krüger R...
Divergence between turtles and Archosauria (birds and dinosaurs) Various ~255 (274 to 233) Mya 108234 Chiari Y, Cahais V, Galtier N...
Mean linear red cell velocity for the temporalis muscle in 34 arterioles and precapillaries not more than 5 µm in luminal diameter Rat Rattus norvegicus 2.43 (±0.08) mm/sec 115135 Ivanov, K., Kalinina...
Fraction of the whole cell Ca2+ current carried by N channel (N-type calcium channel) Mammals pig ≤80%: cat 45%: bovine, rat, mouse & human chromaffin cells 30% % of the whole cell Ca2+ current 113139 García AG et al., Calcium...
Number of ER transcription factor molecules per cell Human Homo sapiens 11,000 ZR-75-1 breast cancer cell line: 260,000 MCF-7 breast carcinoma cell line Molecules/cell 106904 Mark D. Biggin, Animal...