Fig 5. Total immunoglobulin (Ig) isotypes concentrations in cervicovaginal lavage (CVL) supernatants of HIV-1 uninfected non-CSW, HESN and HIV-1 infected CSW women.

Immunoglobulin (A) M, A, G1 and (B) G2, G3, G4 isotypes concentrations (ng/ml) in CVLs were compared with Mann Whitney U test for pair-wise comparisons between HESNs and the two other groups. Data are presented as mean ± SD. Significance levels are shown as *(p < 0.05), **(p < 0.01), ***(p < 0.001). HIV, human immunodeficiency virus; CSWs, commercial sex workers; HESN, HIV Highly-Exposed Seronegative. SD, standard deviation.