The immune system of the respiratory tract in pigs

R Pabst, RM Binns - Veterinary immunology and immunopathology, 1994 - Elsevier
Although the lung is not a lymphoid organ it contains large numbers of lymphocytes. These
can be found in different compartments:(1) the pulmonary intravascular pool, which is organ-
specific and shows a unique migration pattern;(2) the interstitial lymphocyte pool, which is
equivalent in size to the whole blood pool;(3) the bronchus-associated lymphoid tissue
(BALT) which develops as a result of microbial stimulation;(4) the intraepithelial and lamina
propria lymphocytes of the bronchi, with their typical subset composition;(5) the lymphocytes …