## Abstract The cytotoxic and cytogenetic effect of sodium arsenite and sodium arsenate on Chinese hamster ovary (CHO) cells is reported. Chromosome aberrations were induced with both arsenic compounds. Trivalent arsenic was more clastogenic than pentavalent arsenic. Sodium arsenite was also shown
Detrimental effect of visible light on meiosis of mammalian eggs in vitro
β Scribed by Hirao, Y. ;Yanagimachi, R.
- Publisher
- John Wiley and Sons
- Year
- 1978
- Tongue
- English
- Weight
- 424 KB
- Volume
- 206
- Category
- Article
- ISSN
- 0022-104X
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β¦ Synopsis
Abstract
Short wavelength visible light (<470β480 nm) emmitted from ordinary light sources is detrimental to unfertilized hamster eggs in that prolonged exposure to the light disturbs the completion of normal meiosis after the eggs are penetrated by spermatozoa. The fluorescent light commonly used in modern laboratories is more harmful than the light from incandescent lamps. In experiments involving the handling of eggs in vitro, minimal exposure to the light or the use of appropriate filters (e.g., red cellophane sheets) is recommended.
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