Figure 3From: Concurrent infection with porcine reproductive and respiratory syndrome virus and Haemophilus parasuis in two types of porcine macrophages: apoptosis, production of ROS and formation of multinucleated giant cells Viability of MDMs and PAMs infected with PRRSV. Cells were infected with PRRSV and observed by light microscopy at 24, 48, 72 and 96 h PI.Back to article page