Figure 2

Phase contrast photomicrographs of HUVEC culture after treatment with camptothecin Confluent HUVEC at 48 hrs in culture were treated for 24 hrs with (A) 0.5 % DMSO: confluent culture, (B) 500 nM CPT: confluent culture with about 20–30% lower cell density as compared with A ; (C) 5 μM CPT : apoptotic culture with about 60–70 % desquamation, bright objects represent floating cell fragments including apoptotic bodies. Phase contrast photomicrographs (200 ×) are shown.