Fig. 5From: Polysialic acid is released by human umbilical vein endothelial cells (HUVEC) in vitroWorking-model of polySia-dependent effect on HUVEC. Based on a model of Sato and colleagues [22], we hypothesize that polySia binds to growth factors also in the case of HUVEC. The trapping of growth factors by polySia might modulate their biological activitiesBack to article page