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A lymphokine that stimulates B-cell proliferation while inhibiting antibody production.
IL-15 (no prior common name).
A lymphokine that stimulates T-cell proliferation and NK-cell activation.
L
Lymphocyte repertoire.
The more than 109 distinct antigenic determinants (epitopes) that can be recognized by antigen-specific clones of human lymphocytes.
Lymphokine.
A cytokine secreted by a lymphocyte.
Lysozyme.
An enzyme present in tears and body secretions and fluids that helps in the destruction of bacterial cell walls.
M
Macrophages.
Large mononuclear tissue phagocytes that secrete cytokines when activated and interact with T-cells in processing and presenting antigens to B-cells. They are termed monocytes when bloodborne.
Major histocompatibility complex haplotypes.
Genetically controlled proteins on cell surfaces that indicate its specific tissue type. The cellular HLA (human leukocyte antigen) locus is expressed by at least four blocks of genes. A correct arrangement and recognition of MHC surface proteins is necessary for direct cell-to-cell contact between antigen-presenting cells and lymphocytes and for