Source:http://linkedlifedata.com/resource/umls/id/C0026249
MSH: Substances that stimulate mitosis and lymphocyte transformation. They include not only substances associated with LECTINS, but also substances from streptococci (associated with streptolysin S) and from strains of alpha-toxin-producing staphylococci. (Stedman, 25th ed),CSP: any of a class of substances that stimulate mitosis and cell transformation, especially lymphocyte transformation.,NCI: A soluble substance, usually a protein, that induces mitosis in resting cells, thereby causing cell proliferation.