PTPRC and gonorrhea: A significantly lower percentage of tissue occupied by clustered infiltrates assessed according to CD45 immune reactivity was found in PAC (mean (M)=0.7; median (Mdn)=0; range (Rng)=0–5; standard error mean (s.e.m.)=0.2), as compared with peri-PAC (M=2.5; Mdn=1; Rng=0–15; s.e.m.=0.7; P=0.021) and NHPG (M=1.9; Mdn=2; Rng=0–5; s.e.m.=0.3; P=.006) (Figure 2B), whereas no such differences among PAC, peri-PAC and NHPG were demonstrated for percentage of tissue occupied by an overall leucocyte infiltrate (data not shown).