Touchdown enzyme time-release PCR for C psittaci in ocular adnexal EMZL tumor specimens. (A) South Florida ocular adnexal EMZL tumor specimens. PC indicates positive control (C psittaci strain 6 BC; ATCC); M, molecular ladder; lanes 1-5, 5 negative ocular adnexal EMZLs; and NC, negative control (PCR mixture with primers, but without DNA input). (B) Reanalysis of an Italian case of a C psittaci–positive ocular adnexal EMZL tumor specimen. PC indicates positive control (see panel A description for details); IC, Italian C psittaci–positive case; and NC, negative control (see panel A description for details).