2,3,4,6-Tetra-O-sulfo-alpha-D-mannopyranosyl-(1->3)-2,4,6-tri-O-sulfo-alpha-D-mannopyranosyl-(1->3)-2,4,6-tri-O-sulfo-alpha-D-mannopyranosyl-(1->3)-2,4,6-tri-O-sulfo-alpha-D-mannopyranosyl-(1->2)-3,4,6-tri-O-sulfor-D-mannopyranoside bioactivity Vascular endothelial growth factor A, long form (Knowledge Graph Assertion)