HIV-1 gp120/160-induced HUVEC apoptosis as detected by TUNEL assay.

HUVEC grown in LSM were untreated (A) or treated with gp120 (1000 ng/mL) (B) or gp160 (1000 ng/mL) (C) for 10 hours; gp120-treated (1000 ng/mL) HUVEC at a higher magnification are represented in (D). Samples were analyzed for apoptosis using the TUNEL method. Green fluorescent cells represent apoptotic cells.