Ganglioside GT1b Ammonium Salt Bovine Brain ( [Neu5Aca23Galb13GalNAcb14(Neu5Aca28Neu5Aca23)Galb14Glcb11Cer]). Lyophilized solid. Trisialoganglioside prepared from bovine gray matter. Inhibits Con-A-stimulated mitogenesis in murine T cells. Lymphocyte mar