“…All sera were tested simultaneously in 2-fold dilutions from 1:8 to 1:512 against both antigens according to a procedure previously described (Philip, Lackman, Frank, Morrison, Casper, and Greaves, 1967 of LGV, DC-009 strains, and 36th egg passage of the TRIc, LB-1 (TRIc/GB/MRc-1/G) strain originally isolated from the cervix of the mother of an infant with inclusion blennorrhoea (Jones, Collier, and Smith, 1959 positive. Of 67 specimens tested in both systems, five were positive in both and eleven were positive only in cell culture.…”