Fine structure of the zona pellucida of unfertilized egg cells and embryos.

Abstract

The fine structure of the zona pellucida of mouse unfertilized egg cells and of mouse embryos was investigated. In addition to standard fixation for electron microscopy, fixation with an addition of ruthenium red was used and found to be especially valuable for the purpose of studying the zona pellucida. The zona pellucida of unfertilized egg cells and of… (More)

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