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Biology of Reproduction, Vol 12, 535-540, Copyright © 1975 by Society for the Study of Reproduction

Comparative Solubility Properties of Rat and Hamster Zonae Pellucidae

MASATO INOUE 1, and DON P. WOLF 1

1 Division of Reproductive Biology, Department of Obstetrics & Gynecology, School of Medicine Philadelphia, Pennsylvania 19174 and Department of Biophysics and Physical Biochemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19174


The solubility properties of the rat and hamster zona pellucida in 2-mercaptoethanol, acidic solutions and sodium periodate have been examined. Zonae from unfertilized rat ova were more soluble than those from the corresponding 2-cell embryos and zonae from immature unfertilized ova were more soluble than their mature counterparts. Differences in the solubility properties of zonae surrounding unfertilized and 2-cell hamster eggs were not evident. The solubility properties of hamster zonae contrast markedly with those of rat or mouse zonae, suggesting species differences in zona molecular architecture. The physiological importance of zona alterations at fertilization has been discussed.

Accepted on November 21, 1974






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Copyright © 1975 by the Society for the Study of Reproduction.