CelTOS Plasmodium falciparum malaria antigen

CelTOS (also known as Ag2) is a highly conserved antigen that is expressed in malaria preerythrocytic sporozoites and sexual stage ookinetes; in addition, it is involved in sporozoite invasion of hepatocytes. WRAIR has developed and patented a His-tagged recombinant protein of full length CelTOS from both P. berghei and P. falciparum.