SPATA6 and infection: The numbers of adult worms in challenge infection were follows: 298,675, 349,875, 169,875, 289,000, and 291,000 for the group immunized with PBS alone; 201,450, 215,850, 175,800, 41,800, 73,800, and 145,125 for the group immunized with adjuvant alone; and 210, 7,700, 37,675, 20,670, 64,550, and 77,000 the group immunized with adjuvant plus SRf1.