Yersinia Antimicrobic Supplement CN BD Difco™ 6 x 10 ml. BD Difco™ Yersinia Antimicrobic Supplement CN is used in the preparation of Yersinia SelectiveAgar (CIN Agar). The complete medium, based on the Cefsulodin-Irgasan-Novobiocin (CIN) Agarformulation of Schiemann, is recommended for use in the selective isolation and cultivation ofYersinia enterocolitica from clinical and non-clinical sources. Use with: Yersinia Selective Agar Base(Cat. No. 218172).