FIG. 5.

HIV p24 expression in cervical biopsy specimens from women with HAPC. The immunohistochemistry results when cervical biopsy specimens from women with HAPC were assayed by alkaline phosphatase staining method are depicted. (a, c, e, g) The presence of HIV p24 antigen in the tissues (as indicated with arrows, magnification 200 × ). (b, d, f, h) The results when the cervix tissues were processed without the primary antibody (HIV p24 mAb) to serve as negative controls (magnification 200 × ). Increased endogenous phosphatase activity, which could not be blocked with levimasole, was noted in all HIV p24-positive cervix tissues that were processed without the primary antibody to serve as controls (d, f).