Thrombotic and thromboembolic disorders are now more than ever the leading causes of morbidity and mortality, having become common medico-social problems with economic consequences in industrialized and developing countries alike. Particularly acute is thrombosis complicating lifestyle-related diseases such as malignancies and arteriosclerosis resulting from diabetes mellitus, hypertension, obesity, and related conditions. Expanding knowledge of molecular biology and genetics, however, is providing new possibilities in the regeneration and development of tissues, organs, and embryos. As...