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SUPPRESSION OF IMMUNE RESPONSE BY ISOLATION OF THE BURSA OF FABRICIUS FROM ENVIRONMENTAL STIMULI
Author(s) -
Ekino S,
Nawa Y,
Tanaka K,
Matsuno K,
Fujii H,
Kotani M
Publication year - 1980
Publication title -
australian journal of experimental biology and medical science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.999
H-Index - 104
eISSN - 1440-1711
pISSN - 0004-945X
DOI - 10.1038/icb.1980.28
Subject(s) - bursa of fabricius , biology , immune system , epithelium , involution (esoterism) , incubation , anatomy , immunology , genetics , neuroscience , biochemistry , consciousness
Summary When the bursa of Fabricius was isolated from environmental stimuli across the bursal epielium by clipping the bursal duct on the 19th day of incubation, marked retardation was observed both in the bursal development and in the maturation of the immune reactivity. Neither necrotic changes nor involution in the bursa was, however, observed at any stage examined after clipping the bursal duct. Lymphopoiesis in the bursa and the immune reactivity of these chickens gradually increased with age, although they were constantly lower than those of controls. These results suggest that environmental stimuli across the bursal epithelium play an important role in the amplification mechanisms for B‐cell differentiation in the bursa.