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Three cell division types at Cell growth, by JWSchmidt
Diagram summarising control of stomach acid secretion at Gastric acid and Stomach, by Prisonblues
Polydactyly, by Drgnu23
Root canal, by Jeremykemp, traced by jellocube27
Antarctic krill eye at Compound eye, by Uwe Kils
Closeup of mushroom backlit by Sun at Gill (mushroom), by Eraticus
DNA clamp, by Opabinia regalis
Embryo by Ed Uthman
Strabismus surgery, by Bticho
Osmotic pressure on blood cells at Osmosis, by LadyofHats
Diagram of an eye, by Chabacano
Diagram of a neuron cell (at Dendrite, Chemical synapse, by LadyofHats
Front view of a female human skeleton, by LadyofHats.
Back view of a female human skeleton, by LadyofHats.
Citric acid cycle, by YassineMrabet/Narayanese and others
Autotomy, by Fir0002
Human respiratory system, by LadyofHats
Flagellum, by LadyofHats
Wormian bones, by LadyofHats
Human arm bones, by LadyofHats
Prokaryote, by LadyofHats
Herring Gull excreting waste from its cloaca, by Sanchezn
Staphylococcus aureus, by Erbe and Poole, ARS
Neutrophil engulfing anthrax bacterium, by Volker Brinkmann
Agar plate containing infected blood, by Bill Branson, edited by Fir0002
The Vitruvian Man, by Leonardo da Vinci (photographed by Luc Viatour)
Studies of Embryos by Leonardo da Vinci (photographed by Luc Viatour)