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Table 1 Useful microbiological tests to aid in differentiation of Tsukamurella from other bacteria causing cavitary pneumonia

From: Coexistence of primary adenocarcinoma of the lung and Tsukamurella infection: a case report and review of the literature

  Mycelium formation β-galactosidase Mitomycin C resistance Para-aminosalicylic acid degradation Aryl sulphatase Galactose (carbon source)
Tsukamurella pulmonis - + + - - +
Rhodococcus (R. equi, R. terrae, R. rhodochrous) - - - - - -
Mycobacterium (M. chelonei, M. abscessus, M. fortuitum) - + + + - -
Nocardia (N. asteroides, N. brasiliensis, N. fracinica) + + + - + -
  1. Note that Tsukamurella pulmonis is the only microorganism that uses galactose as a carbon source. Adapted from Tsukamura and Kawakami [2]