To generate Cyt cT-specific and Cyt cS-specific antibodies, rabbits were immunized with keyhole limpet hemocyanin-conjugated synthetic peptides of 16 amino acids derived from the carboxy terminal of Cyt cT and Cyt cS (Cyt cT, SEREDLIKYLKQATSS; Cyt cS, GERADLIAYLKKATNE). All antisera were affinity purified with each peptide attached to a solid phase. Peptide synthesis, immunization, and affinity purification were performed by Quality Controlled Biochemicals, Inc. (Hopkinton, Mass.).
The following people made monoclonals to the cT isoform a long time ago:
Biochem Cell Biol. 1986 Dec;64(12):1211-7.
I don't have any personal experience with any of these antibodies. As far as I know, they are not commercially available so you should contact the authors and see if you can get some antibody or the hybridomas. You could also make your own antibody using the peptide described above as the antigen. Hope this helps.