t suppressor factors meaning

[Medicine]
Proteins,protein complexes,or glycoproteins secreted by suppressor T-cells that inhibit either subsequent T-cells,B-cells,or other immunologic phenomena. Some of these factors have both histocompatibility (I-J) and antigen-specific domains which may be linked by disulfide bridges. They can be elicited by haptens or other antigens and may be mass-produced by hybridomas or monoclones in the laboratory.