[Quantitative studies of the collagen content of the human amnion and chorion].

The content of collagen in the amniotic and chorionic connective tissue was determined with the quantitative investigation method of hydroxyprolin. Significant differences do not exist between the amount of collagen in the amniotic and chorionic connective tissue. The difference in the tension stability must be based on the variegating pattern of the collagen fibrils.