There are primarily two types of antibodies used in toxicology: monoclonal antibodies and polyclonal antibodies. Monoclonal antibodies are derived from a single B-cell clone and have high specificity for a single antigen epitope. This makes them ideal for precise applications. Polyclonal antibodies, on the other hand, are produced by multiple B-cell clones and can recognize multiple epitopes on the same or different antigens, offering versatility and robustness in various assays.