The clinic is the referral center for specialist services and has a special lab to examine sputum samples as well as Acid-fast Bacilli (AFB) Culture Research.
Relapses have also occurred after appropriate treatment when infected by Gram-negative enteric bacilli, so follow ups are needed in cases of Gram-negative derived meningitis.
In 1925, Treat Baldwin Johnson and Coghill were detected a minor amount of a methylated cytosine derivative as a product of hydrolysis of tuberculinic acid, from avian tubercle bacilli, with sulfuric acid.