Quantitative determination of collagen types present in the ductal infiltrating carcinoma of human mammary gland

Abstract

Further analyses about collagen present in ductal infiltrating carcinoma of human mammary gland indicate that a large amount of it is represented by type I omotrimer that has been separated from the two other present species, type I eterotrimer and type III, by means of fractionated saline precipitation. Quantitative determinations of the three types, extracted by mild pepsin digestion, are also reported.