Figure 4From: Infection of human monocytes by Chlamydia pneumoniae and Chlamydia trachomatis: an in vitro comparative studyROS production. Reactive Oxygen Species (ROS) production in human monocytes infected by CP or CT at 3, 6 and 24 hours post-infection, detected by means of the fluorogenic probe DCFDA. 0.8 μM Phorbol treatment was used as a positive control. (*P < 0.05; n = 4).Back to article page