Jan, I got my antibody from Oklahoma State University, OK Animal Disease Diagnostic Laboratory. Phone is 405-744-6623 (I believe that's the direct line into the lab). Good clean slides using this antibody! Sally Breeden, HT(ASCP) NM Dept. of Agriculture Veterinary Diagnostic Services PO Box 4700 Albuquerque, NM 87106 505-841-2576