History: < O. Brandeburová. Isolated from: Throat. Additional information: Biohazard group 2. Cultivation conditions: Medium 31, 37°C.
Other numbers: L. Barksdale 603, S.D. Henriksen DLC 603/50. History: < L. Barksdale. Isolated from: Sore on finger. Additional information: Biohazard group 2. Non-toxigenic strain (4178). Cultivation conditions: Medium 31, 37°C.