Microbiology Systemic Bacteriology (Gram Positive Bacilli, Gram Negative Bacilli) 109df1d8 Acid fastness of tubercle bacilli is A Presence of mycolic acid B Integrity of cell wall C Both of the above D None of the above High-Yield Explanation Acid fastness - ability to resist decolorisation TB bacilli is 20 % acid fast This propey is due to presence of mycolic acid it has nothing to do with integrity of cell wall