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1997:
Akaki C; Simazu M; Baba T; Tsuji S; Kodama H; Mukamoto M; Kajikawa T
Possible migration of harderian gland immunoglobulin A bearing lymphocytes into the caecal tonsil in chickens.
Zentralblatt für Veterinärmedizin. Reihe B. Journal of veterinary medicine. Series B 1997;
44(
4):.
This study was designed to evaluate the significance of the Harderian gland (HG) in the chicken IgA-production system by investigating the influence of HG on the increase of surface IgA (sIgA)-positive cells in other lymphoid organs and also the possibility of migration of HG lymphocytes into other organs. Non-contact culture of splenic or caecal tonsil (CT) lymphocytes with HG whole cells did not enhance the expression of sIgA. The experiment of HG lymphocyte transfer showed that the transferred HG lymphocytes migrated mainly into the CT in the 3-week-old recipient, and mainly into the CT and bursa of Fabricius (BF) in the 6-week-old recipient. It was also found that the transferred sIgA-positive HG lymphocytes migrated selectively into CT in both 3-week-old and 6-week-old recipients. These results indicated that chicken HG plays a central role not only in governing the local immunity in the eyes and respiratory tract but also as an organ which supplies precursory IgA-producing cells involved in local immunity in the intestine.
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