<prompt> Virulence of mycorbacteria is due to:Mycotoxin productionCell envelopeResistance to inactivation by heatProteolytic bacteria  <response>: Friends there are multiple factors are listed as virulence factors of the MTC, few of them are:Lipids and Fatty Acid Metabolism and Synthesis of complex lipids, lipoproteinsMycolic acid synthesisCell envelope and cell wall proteinsSome secretion systemProteins Inhibiting Antimicrobial Effectors of the Macrophage and protein kinasesDifferent Proteases and proteins associated with itApoptosis inhibition and arresting the phagosome 