DA, (2S,3S,4S)-4-[(2Z,4E,6R)-6-Carboxyhepta-2,4-dien-2-yl]-3-(carboxymethyl)pyrrolidine-2-carboxylic acid
The original antibody was originated from a scFv phage library obtained from a sheep hyperimmunised with DA-BSA conjugate. It was isolated by panning against DA.