CLOUDS HILL IMAGING LTD / SCIENCE PHOTO LIBRARY CLOUDS HILL IMAGING LTD / SCIENCE PHOTO LIBRARY
Zebra finch sperm. Light microscopy footage of sperm cells from the zebra finch (Taeniopygia guttata), a bird used in genetic research. Sperm cells (spermatozoa) are the male sex cells (gametes). They are produced by the male to fertilise a female egg during reproduction. These sperm have a stiff tail and a helical body.
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