A: p24 in sperm from an AIDS patient (arrow); B: No p24 was detected in sperm from a healthy donor; C: p24 within the cytoplasm of an embryonic cell derived from sperm of an HIV/AIDS patient (arrow); D: No p24 was detected in an embryonic cell derived from the sperm of a healthy donor. Magnification: A, B, (×200); C,D (×1000). The integrated HIV-1 provirus in patient sperm chromosome and its transfer into the early embryo by fertilization: Wang D, Li LB, Hou ZW, Kang XJ, Xie QD, Yu XJ, Ma MF, Ma BL, Wang ZS, Lei Y, Huang TH - PloS one (2011). Not altered. CC.