An immune response mediated by lymphocytes expressing specific receptors for antigen produced through a somatic diversification process that includes somatic recombination of variable lymphocyte receptors (VLR) incorporating leucine-rich repeat (LRR) domains, and allowing for enhanced responses upon subsequent exposures to the same antigen (immunological memory). Examples of this process are found in jawless fish, including the lampreys (Petromyzontidae) and hagfishes (Myxinidae).
adaptive immune response based on somatic recombination of VLR built from LRR domains