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Geoffroy's tamarin (Saguinus geoffroyi), also known as the Panamanian, red-crested or rufous-na
The cells in blood; A, red blood cells (erythrocytes); B, platelets (thrombocytes); C, white blood c
A roller cell-type electric fuel pump.
Estimates of the dates of origin and extinction of the three main groups of hominins (green, blue, a
Group defenses: Cluster of sawfly caterpillars regurgitating fluid (yellow) that predators find unap