Science Source Feb 2010
EN_90286490_0593
![Science Source Feb 2010](img/medium/arch1/dvd0113/33/EN_90286490_0593.jpg)
Two illustrations showing the principal piece and midpiece of a mammalian sperm tail. The upper illustration shows the middle piece, enclosed by a mitochondrial sheath. The lower illustration depicts the principal piece, shielded by a ribbed fibrous sheath.
2010-02-13
EAST NEWS
Science Source
Don W. Fawcett
9l8648
1,03MB
24cm x 36cm by 300dpi
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