Journal
IN VITRO CELLULAR & DEVELOPMENTAL BIOLOGY-ANIMAL
Volume 49, Issue 8, Pages 569-575Publisher
SPRINGER
DOI: 10.1007/s11626-013-9630-4
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- Royan Institute, Iran
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Cloning mammals by somatic cell nuclear transfer entails the replacement of oocyte chromosomes with the nucleus of a somatic cell. A major step in this technique is to efficiently produce large batches of enucleated oocytes, a process that requires considerable micromanipulation skills and expensive equipments. Here, a simple, fast, and efficient method of manual oocyte enucleation was introduced that can be adopted in every laboratory with the minimum equipments. Common laboratory glass pipettes were pulled on the flame of a burner and then used for manual bisection or enucleation of sheep and goat zona-free oocytes by passing them through the discontinuous cutting border of culture medium and mineral oil. The described techniques showed a certain efficiency to conveniently bisect or enucleate large batches of sheep, and goat oocytes being pre-treated with demecolcine. The method may be straightforward for simple manipulation of oocytes of other species and for development of automated cloning methods as well.
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