Figure 4From: Kupffer cells promote lead nitrate-induced hepatocyte apoptosis via oxidative stressLight micrographs of Hep G2 cells.(a) control untreated cells. (b) HepG2 cells were incubated for 24 hours with conditioned medium from Kupffer cells incubated 24 hours with Pb(NO3)2. Apoptotic cells are indicated by arrows. They appear with modified shape, i.e., elongated or pear-like, and the nucleus is more stained. Haematoxylin-eosin staining. Bar = 10 ÎĽm.Back to article page