DR KEITH WHEELER / SCIENCE PHOTO LIBRARY DR KEITH WHEELER / SCIENCE PHOTO LIBRARY
Frog anatomy, metamorphosis stage, light micrograph. Section through the head and body of a European common frog (Rana temporaria) after it has completed metamorphosis. The head is at right, with the eye (round) at upper right, and the mouth at lower right with ceratohyal cartilage of the jaws (purple). The lens and retina are seen in the eye. In the body cavity is the liver (centre, mottled) next to the stomach (thin red wall) and intestines (solid red areas). At far left is a section through one of the hind legs with cartilage (blue) and muscle (orange). Magnification: x4 when printed at 10 centimetres wide.
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