Electron microscope study of spermiogenesis inCaiman crocodylusL.
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منابع مشابه
Electron Microscope Study of Spermiogenesis in a Fire-brat Insect, Thermobia Domestica Pack
The fine structure of the mature spermatozoon of the insect Thermobia domestica has been investigated. This flagellate spermatozoon is unique with respect to the relative positions of the centriole, nucleus, mitochondrial nebenkern derivatives, and acrosome along the length of the cell. The acrosome lies at the posterior end of the nucleus. Unlike spermatozoa of most animals, the Thermobia sper...
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HE limitation in the penetrating power of electrons is one of the most T serious obstacles in the study of chromosomes by electron microscopy. Chromosomes are generally larger than 0.2p in diameter and are nearly opaque to electron penetration. At various stages of the nuclear cycle, however, chromosomes change their size and shape. Dividing chromosomes are generally largest and “resting” chrom...
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ژورنال
عنوان ژورنال: Bolletino di zoologia
سال: 1987
ISSN: 0373-4137
DOI: 10.1080/11250008709355602