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(a) With few ticks, moose retain a brown coat; (b) at high numbers of ticks, moose self-groom, destr
Human body cavities and membranes
Risk of death from motorcycle accidents (dashed lines) and passenger accidents (solid lines) per 100
A woman in a net on a Congo shore. Although the importation of slaves was illegal after 1807, histor
The Ames test, which screens compounds for potential mutagenicity
Life support system of a developing human