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[Features of the distribution of lymphoid tissue in the walls of the trachea and principal bronchi after exposure to acetaldehyde vapors].

The present study was aimed to examine the lymphoid tissue in the walls of the trachea and major bronchi following the inhalation of acetaldehyde. Albino Wistar rats, subjected to the action of acetaldehyde 20 and 25 mgm/m3 in concentrations during 2, 4, 6, and 8 hrs were the subject of the experiment. It was established that acetaldehyde action in the wall of trachea and major bronchi results in histotopographical changes of lymphoid structures and increase of relative (%) area of lymphoid tissue in the walls of the above-mentioned organs.