Description_x000D_ Application_x000D_ Lectin from Phaseolus vulgaris (red kidney bean) has been used:_x000D_ • for the stimulation of cluster of differentiation (CD4+) T cells_x000D_ • for the activation of primary peripheral blood lymphocytes_x000D_ • for the stimulation of peripheral blood mononuclear cells_x000D_ Biochem/physiol Actions_x000D_ PHA consists of two molecular species, an erythroagglutinin (PHA-E) which has low mitogenic activity and high erythroagglutinin activity, and leucoagglutinin (PHA-L) which has high mitogenic and leucoagglutinating activity, but very low erythroagglutinating activity._x000D_ PHA-E is not blood group specific, but agglutination can be inhibited by certain oligosaccharides. PHA-P is the protein form of PHA prior to separation and purification of erythroagglutinin and leucoagglutinin. PHA-M is the mucoprotein form. Conjugates are prepared from the corresponding purified lectins._x000D_ Packaging_x000D_ Sold on the basis of lectin content_x000D_ Analysis Note_x000D_ Potency and solubility expressed in mg lectin/ml