Antibody therapy has become an important part of the treatment of malignant diseases. Antibodies can block tumor growth factors or their receptors, activate immune attacks on tumors, and be used to deliver payloads such as radioisotopes, cytotoxic drugs, or toxins. Recombinant immunotoxin is a new class of anti-tumor drugs. In general, it is an antibody-toxin chimeric molecule that kills cancer cells by binding the antibody portion to the surface antigen, internalizing and delivering the toxin portion to the cytosol. In the cytoplasm, toxins catalyze the inhibition of key cell functions and cause cell death. Creative Biolabs provides a comprehensive list of recombinant immunotoxin products (not limited to antibody-based RITs) for our worldwide customers. Our RIT products are mainly divided into the following categories: