Immune PRP Pro contains pure bovine colostrum which is rich in immunoglobulins, especially IgG, as well as IgA and IgM. Bovine colostrum contains 40 times more immune-related components than human milk. In addition to these immune system enhancers, bovine colostrum contains viable cells, such as neutrophils and macrophages, which secrete special proteins that support your immune system◆; these proteins include cytokines, lactoferrin, and proline-rich polypeptides