B7786 Rabbit Anti-fd Bactieriophage may be used to sort phage display libraries (antibody, peptide, etc.) with expressed proteins fused to either the gene III or gene VIII protein of filamentous bacteriophage. The product may also be used in "phage ELISA" offering specific activity for detection of recombinant bacteriophage. It will also function as a capture antibody when coated directly on microwell plates or as primary detection antibody for specifically captured fd or M13 bacteriophage.