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Year : 2006
Tome : 157
Volume : 6
Pages : 326-330
Title : Alpha-naphtyl acetate esterase (ANAE) activity and plasma cells in the oesophageal tonsils of chickens
Authors : S. KUM, U. EREN and M. SANDIKCI
Summary : The aim of this study was to determine the localization of T lymphocytes and of plasma cells in the oesophageal tonsils of avians using ANAE staining and methyl-green pyronin method respectively. Eighteen Ross 308 breed male broilers served in this study. Lymphoid tissue in the form of lymph follicles or lymphocytic infiltration was encountered in the lamina propria and between corpus glandulae of the mucous glands in parts of the oesophagus before and after the crop and at the oesophagus junction with the crop. However, tonsil-like lymphoid tissues could only be seen in the distal parts of the mucosal folding at the oesophagus junction with the proventriculus. ANAE positive cells were mainly observed in the germinal centres of the tonsils, and only rare positive cells were encountered in the IFA (inter-follicular areas) and in the lymphoepithelium. In oesophageal tonsils, plasma cells appeared to be stratified beneath the epithelium, but some B cells infiltrated the epithelium. The plasma cells were also encountered in the IFA and in the germinal centres. The oesophageal tonsils were presumed to form a barrier against foreign particles taken orally and also to play an important role in the cellular and humoral defence against various antigens.
Keywords : alpha-naphtyl acetate esterase - plasma cell - oesophageal tonsil-chicken
Correspondence : S. KUM
Adress : Department of Histology-Embryology, Adnan Menderes University, Faculty of Veterinary Medicine, Aydin, Turkey : E-mail : skum@adu.edu.tr , Fax: +90 256 247 07 20.
Link : pdf

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