DR MORLEY READ / SCIENCE PHOTO LIBRARY DR MORLEY READ / SCIENCE PHOTO LIBRARY
Glass frog (Chimerella mariaelenae). Underside viewed through glass. Many glass frogs (family Centrolenidae) are transparent and their internal organs can be seen. Liver and intestine are covered in white pigment, gall bladder is yellow. Red tube is the aorta. The pericardium in this species is white so the blood within the heart is not visible.
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