Page 1548 - Veterinary Immunology, 10th Edition

VetBooks.ir Kinins Vasoactive peptides produced in injured or inflamed tissue.

Kupffer cells Macrophages lining the sinusoids of the liver.

L

Lag period The interval between administration of antigen and the

first detection of antibody.

Langerhans cells A population of specialized dendritic cells found

in the skin. They are effective antigen-presenting cells.

Lectin A protein that can bind specifically to a carbohydrate. Some

lectins of plant origin can induce lymphocytes to divide.

Leukemia A cancer consisting of white cells that proliferate within

the blood.

Leukocytes White blood cells. This general term covers all the

nucleated cells of blood.

Leukopenia The absence of leukocytes.

Leukotoxin A toxin produced by bacteria that kills leukocytes.

Leukotrienes Lipid mediators derived from arachidonic acid and
responsible for potent proinflammatory responses. Released by
degranulating mast cells.

Ligand A generic term for the molecules that bind specifically to a
receptor.

Linkage disequilibrium The nonrandom association of two genes
found at different loci.

Linked recognition The necessity for lymphocytes to receive two
or more simultaneous signals to be activated.

Locus The location of a gene in a chromosome.

Looping out A method of excising a segment of intervening DNA
(intron) in order to join two gene segments (exons).

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