NOS2 and tuberculosis: Intriguingly, although tuberculosis was propagated after adoptive transfer of 5 × 105 HSPCs as microbead-purified Lin−Sac1+ cells (Supplementary Figure 3A–C), which contain a mixed population of LT-HSCs, ST-HSCs, and MPPs, transfer of 5 × 104 infected LT-HSCs to Nos2−/− mice did not result in tuberculosis (data not shown).