Hi Laurie, We are purchasing the antibody only from Roche/Ventana and optimizing it for use with our detection system (Bond Refine Detection kit) and the Bond-III stainer. Ask your Ventana person about buying the Ab only. Greg -- *Greg Dobbin* 1205 Pleasant Grove Rd RR#2 York, PE C0A 1P0 *Everything in moderation...even moderation itself**!*