Paulo Roberto de Brito Cunha Estrada dos Três Rios, 654 Jacarepaguá, RIO, RJ CEP 22745.003 February 2009 Consisting of a single layer of cells, the endothelium was considered as a simple covering tissue. The only information we have had was that it is the only cell presenting Weibel-Palade corpuscles (sequestrating the von Willebrand protein, the […]