Anatomical system that protects the body from foreign substances, cells, and tissues by producing the immune response and that includes especially the thymus, spleen, lymphoid tissue, lymphocytes including the B cells and T cells, and antibodies.

uberon

The antibody-based immune system defined by the presence of the major histocompatibility complex (MHC), T cell receptor (TCR), B cell receptor (BCR) or recombination activating genes (RAGs) is known beginning from jawed fishes.[well established][VHOG]

UBERON:0002405

http://purl.obolibrary.org/obo/uberon.owl, http://purl.obolibrary.org/obo/cl.owl

• immune system development

• liver

• thymus primordium
• leukocyte
• immune organ
• bone marrow
• lymphoid system