The presence of acid-fast bacilli in a skin lesion but the inability to grow the organism on Lowenstein-Jensen medium is characteristic for

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Mycobacterium leprae and M. haemophilum are both known for their inability to grow on artificial media like Lowenstein-Jensen medium. M. leprae, the causative agent of leprosy, cannot be cultured in vitro, while M. haemophilum requires special conditions such as lower temperatures and high iron content for growth, not provided by Lowenstein-Jensen medium.

The Presence of Acid-Fast Bacilli in a Skin Lesion but the Inability