Chloramphenicol is widely used in antibody research as a selective antibiotic in bacterial expression systems, where plasmids carrying chloramphenicol resistance genes enable stable production of recombinant antibodies like scFvs and Fab fragments. Additionally, antibodies against chloramphenicol are employed in sensitive immunoassays to detect antibiotic residues in food products. However, systemic use of chloramphenicol can suppress immune function, potentially affecting antibody generation during immunization.