PDE6B and infection: Nonetheless, MtbΔRD1::RD1-ESAT6Δ84-95 and MtbΔRD1::RD1-ΔpromCFP10 strains, both lacking the expression of a functional ESAT-6/CFP10 complex, promoted DC apoptosis although at different degrees, whereas infection with MtbΔRD1::B412 did not.