Fig. 1From: Induction of ROS generation and NF-κB activation in MARC-145 cells by a novel porcine reproductive and respiratory syndrome virus in Southwest of China isolateNegative control and PRRSV isolate YN-2011 infected MARC-145 cells. a PRRSV induced cytopathic effects (CPE) appeared approximately 72 h after infection. b Indirect fluorescent antibody staining with FITC, 48 h after infection, confirmed the presence of PRRSV. Pictures were taken with a Leica camera (Germany)Back to article page