ADCY10 and infection: Previously, we observed high enrichment of cholesterol biosynthesis pathways during early infection of PECs by Beijing strains (Mvubu et al.2016a), hence transcripts (hsaC, icl1, choD, fadD28, treS) implicated in fatty acid and cholesterol metabolism were selected for quantification through RT-qPCR for clinical strains of M. tuberculosis.