Susceptibility to thiophene-2-carboxylic acid hydrazide (T2H) is characteristic of which of the following mycobacteria?

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Study for the Clinical Laboratory Science – Microbiology Test. Use flashcards and multiple choice questions, each with hints and explanations. Get ready for success!

Multiple Choice

Susceptibility to thiophene-2-carboxylic acid hydrazide (T2H) is characteristic of which of the following mycobacteria?

Explanation:
In differentiating mycobacteria, specific chemical susceptibility patterns help identify species. Thiophene-2-carboxylic acid hydrazide (T2H) inhibits the growth of M. bovis, so this organism is susceptible to T2H. In contrast, M. tuberculosis and other common mycobacteria usually resist T2H and continue to grow. Therefore, observing susceptibility to T2H points to M. bovis as the cause. The other organisms listed do not exhibit this T2H-susceptible pattern.

In differentiating mycobacteria, specific chemical susceptibility patterns help identify species. Thiophene-2-carboxylic acid hydrazide (T2H) inhibits the growth of M. bovis, so this organism is susceptible to T2H. In contrast, M. tuberculosis and other common mycobacteria usually resist T2H and continue to grow. Therefore, observing susceptibility to T2H points to M. bovis as the cause. The other organisms listed do not exhibit this T2H-susceptible pattern.

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