T.P. DICKINSON / SCIENCE PHOTO LIBRARY T.P. DICKINSON / SCIENCE PHOTO LIBRARY
Embryo of a spotted salamander Ambystoma maculatum, raised in normal pH, H2O levels, showing a healthy organism. This picture is one of a pair, the second of which shows a greatly deformed embryo raised in pH, H2O levels resembling those found in acid rain contaminated waters.
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