TheHuman BD-1 ELISA is capable of recognizing both recombinant and naturally produced Human BD-1 proteins. The antigens listed below were tested at 50 ng/ml and exhibited 100% cross reactivity. ?, Human: BD-1 (47 aa) The antigens listed below were tested at 50 ng/ml and did not exhibit significant cross reactivity or interference. ?, Human: BD-2, BD-3, BD-4