Enhancement of phagocytic activity of human monocytic-macrophagic cells by immunostimulating peptides from human casein

Two immunostimulating peptides, Val-Glu-Pro-Ile-Pro-Tyr and Gly-Leu-Phe, obtained from human caseins, were demonstrated to significantly stimulate binding of human senescent red blood cells to human monocytic-macrophagic cells and their phagocytosis by these cells.