Monocytes from people with active or latent TB stimulated in vitro with PPD. Monocytes from people with active or latent TB stimulated in vitro with PPD

This experiment explored in vitro responses of monocytes following in vitro stimulation with purified protein derivative (PPD) for 4 hours. Monocytes were collected both from individuals with active tuberculosis (TB) disease, as well as those with latent TB infection.