Images Dated 11th July 2001
Available as Framed Photos, Photos, Wall Art and Gift Items
Choose from 14 pictures in our Images Dated 11th July 2001 collection for your Wall Art or Photo Gift. Popular choices include Framed Photos, Canvas Prints, Posters and Jigsaw Puzzles. All professionally made for quick delivery.
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Motorsport Images
Featured 11 Jul 2001 Print
Sperm, SEM
Sperm. Coloured scanning electron micrograph (SEM) of human sperm (spermatozoa), the sex cells of the male. Sperm are about 0.065 millimetres in length. Each head contains genetic material that is transferred to the female egg (ovum) during fertilisation. Their flexible tails enable them to propel themselves along the female reproductive tract. Only one sperm can successfully penetrate the egg and fertilise it. Sperm are formed in the testes by a specialised form of cell division known as meiosis. Each sperm contains 23 chromosomes, including an X or Y sex chromosome. Magnification x4000 at 6x7cm size
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