Salamander Sperm |
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A. Kent Christensen, Professor Emeritus, Cell and Developmental Biology
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| This section through a sperm in the testis of a terrestrial salamander (Batrachoseps attenuatus) was taken in an electron microscope. The animal was caught in the Arboretum of Stanford University in 1964. The large petal-like structures touching the black area are mitochondria, energy factories that provide the sperm cell with sufficient fuel to actively swim. |
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