The histochemistry of complex carbohydrates in the ovarian follicles of adult mice

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Abstract
In the ovarian follicles of adult mice, complex carbohydrate-containing structures have been studied by means of light microscopic histochemical methods. In the ovarian follicles, the zona pellucida of oocytes, follicular fluid and intercellular matrix of the granulosa layer are found to exhibit positive reactions for complex carbohydrates with 1,2-glycol and acidic groups and α-D-mannosyl and α-D-glucosyl residues. The present histochemical analyses have revealed that the complex carbohydrates common to the three types of the structures are hyaluronic acid, sulfated glycosaminoglycans other than isomeric chondroitin sulfates and neutral glycoproteins and that sialic acid is a particular moiety of the zona pellucida, whereas isomeric chondroitin sulfates being that of the follicular fluid and intercellular matrix of the granulosa layer. The histophysiological activities of the carbohydrate-containing structures have been discussed with special reference to their histochemical properties determined in the present study.