Other numbers: CNCTC Pn20 26/57, NCTC 11908, E. Lund strain "Lederle". History: < CNCTC < J. Rotta < E. Lund. Isolated from: Denmark. Additional information: Type 20. Media testing (5953). Biohazard group 2. Cultivation conditions: Medium 91, 37°C, 5% CO2.