atypical mycobacteria

Nontuberculous Mycobacteria (NTM): Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes

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Turbid growth of Nontuberculous Mycobacteria (NTM), Mycobacterium fortuitum in a Mycobacteria Growth Indicator Tube (MGIT)

Introduction Nontuberculous Mycobacteria (NTM) are a large group of over 190 species of mycobacteria that are present in the environment (soil and water). They do not cause tuberculosis or leprosy, and they are opportunistic pathogens, largely infecting individuals with pre-existing lung conditions, weakened immunity, or …

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Grocott’s Methenamine Silver (GMS) Staining of Mycobacteria:Introduction, Principle, Clinical Significance, Advantage, Disadvantage, and Keynotes

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Introduction Grocott’s Methenamine Silver (GMS) stain is a histochemical staining method primarily used to detect fungi in tissue sections. However, it can also stain certain acid-fast organisms like Mycobacteria, especially in tissue biopsies where standard Ziehl-Neelsen or fluorescent stains may miss them. The technique enhances …

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