Page 1551 - Veterinary Immunology, 10th Edition

contact with foreign lymphocytes in vitro.
VetBooks.ir Modified live virus A virus whose virulence has been reduced so

that it can replicate in the host but cannot cause disease in
normal animals.

Molecular mimicry The development by parasites or other
infectious agents of molecules whose structure closely resembles
molecules found in their host. In this way the invaders may be
able to evade destruction by the immune system or perhaps

trigger autoimmunity.

Monoclonal Originating from a single clone of cells.

Monoclonal antibody Antibody derived from a single clone of cells
and hence chemically homogeneous.

Monoclonal gammopathy The appearance in serum of a high level
of a monoclonal immunoglobulin. This is commonly, but not

always, associated with the presence of a myeloma.

Monocytes Immature macrophages found in the blood.

Monomer The basic unit of a molecule that can be assembled using
repeating subunits.

Mononuclear cells Those leukocytes with a single round nucleus;
for example, lymphocytes and macrophages.

Mononuclear-phagocytic system The cells that belong to the
macrophage family and their precursors.

Monotremes The order containing the least complex egg-laying
mammals. These include the platypus and spiny anteaters

(Echidna).

Myeloid system All the granulocytes and their precursors. These

precursor cells are found in the bone marrow.

Myeloma A tumor of plasma cells.

Myeloma protein The immunoglobulin product secreted by a

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