Other numbers: ATCC 10799, DSM 4261, LMD 52.29, NCIMB 8134, NCDO 744, strain Davis, strain C181. History: < NCIB < A.L. Bacharach. Additional information: Assay of vitamin B12 (1463). UV mutant of CCM 2024 (= strain W). Biohazard group 2. Cultivation conditions: Medium 7, 37°C.