Obligate aerobic, gram-positive, weak acid-fast, nonmotile bacilli, Tsukamurella tyrosinosolvens: Minireview of a rare opportunistic pathogen

Figure 1 Gram staining of Tsukamurellatyrosinosolvens from aerobic bottles, blood cultures (× 1000 magnification). Blood sample from a catheter-related blood stream infection patient, at our institution. Numerous rod-shaped bacteria are confirmed.

Figure 2 Tsukamurellatyrosinosolvens on a blood agar plate. The blood sample was taken at our institution, from a patient with a catheter-related blood stream infection. A: The development of flat, huge, dry, and white- to light-cream-colored bacterial mass is confirmed; B: A close-up image. The development of flat, huge, dry, and white- to light-cream-colored colonies, in addition to crow's feet in the overlapping portion, is confirmed.