BCL2 and infection: Infection with MAP or MTB did not exhibit significant changes in Bcl2 (MAP: 2.33 ± 0.18, MTB: 1.50 ± 0.29; p < 0.05; Figure 2) while adding nicotine treatment following mycobacterial infection elevated its expression (MAP + nicotine: 4.60 ± 0.11, MTB + nicotine: 5.71 ± 2.26; p < 0.05).