Want to see animals preserved in formalin? Sure you do.
In the preservation of animal specimens for study, animals are usually preserved using formalin where the whole body would be immersed in the posture in which it is supposed to stay permanently because it will be hardened. The ratio of formalin to carcass must at least be 12 to 1 to ensure a good fixation.
Link - via digg
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The sloth fetus looks eerily human.
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