Thrombosis and Haemostasis, Table of Contents Thromb Haemost 1971; 26(02): 370-377DOI: 10.1055/s-0038-1653685 Originalarbeiten – Original Articles – Travaux Originaux Schattauer GmbH The Human Blood Platelets as a Molecular Mosaic Its Role in Aggregation and Thrombus Formation[*] J. N Mehrishi ** 1 Department of Radiotherapeutics, University of Cambridge, Addenbrook’s Hospital, Trumpington Street, Cambridge, England › Author Affiliations Recommend Article Abstract Buy Article Summary On the surface of human blood platelets various types of groups are present - sulphydryl groups, positively charged amino groups and at least three types of anionogenic groups. The numbers of these groups on a per cell basis have been calculated and then* relative contributions to the net charge determined. Two arrangements for the distribution of the groups in the cell periphery have been proposed. Such studies provide a molecular basis for many reactions taking place at the cell surface. 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