Red-Eyed Treefrog Embryos, Showing Their Bright Red External Gills (IMAGE)

Smithsonian Tropical Research Institute

Red-Eyed Treefrog Embryos, Showing Their Bright Red External Gills

Caption

"Through a dissecting microscope you can actually see the blood circulating through the branches," explained Jessica Rogge, who conducted this study as an undergraduate at Boston University

Credit

Karen Warkentin, Boston University and STRI

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Please credit: Karen Warkentin

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