Bright GRA12A, GRA12B, and GRA12D puncta were visible at the cyst periphery in 6-h differentiated cysts; similar localization has been seen with CST1, GRA1, GRA2, GRA4, GRA5, GRA6, GRA7, GRA9, GRA12 (30, 31), and succinylated wheat germ agglutinin (s-WGA)-stained molecule(s) (54). The gene discussed is CST1; the disease is cyst.