Individual antigens of cattle. Bovine CD1 (BoCD1).

The results support the view that these mAbs can be regarded as equivalent to CD1 mAbs in man, as has been concluded for certain of them previously. Although mAb 20-27 did not cluster with the other mAbs, the finding that it precipitated the same molecule from thymocytes indicates that it should be included in BoCD1. Studies in man indicate that more than one CD1 molecule exists (Boumsell and Knowles, 1988; Cattoretti et al., 1988) and a similar situation is apparent in cattle with 20-27 probably being equivalent to CD1c and the others to CD1b.