Earlier this month, the NIH announced two new Funding Opportunity Annoucnements (FOAs) on the topic of Myeloid-Derived Suppressor Cells (MDSC) as potential therapeutic targets in TB/HIV co-infected patients. The purpose of these FOAs is to invite applications for support of innovative clinical, preclinical and non-clinical research to determine the potential of MDSCs as a target for host-directed therapeutics for tuberculosis in the context of HIV co-infection, and to better understand the role of host-induced immunosuppression in the progression of Mycobacterium tubercul