| DLA | Dog Leukocyte Antigen Complex |
| FLA | Feline Leukocyte Antigen Complex |
| GALT | Gut-Associated Lymphoid Tissue |
| MHC | Major Histocompatibility Complex |
| TLR | Toll-Like Receptors |
| RFFIT | Rapid Florescent Foci Inhibition Test |
| RVNA | Rabies Virus Neutralizing Antibody |