FN1 and breast cancer: Lebecin (a C-type lectin-like protein from Macrovipera lebetina venom) inhibited the integrin-mediated attachment of MDA-MB-231 (human breast cancer) cells to fibronectin and fibrinogen [17]; Bauhinia forficata seed lectin inhibited adhesion of MCF-7 cells to laminin, collagen I, and fibronectin by decreasing expression of α1, α6, and β1 integrin subunits [21].