ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2014, Vol. 45 ›› Issue (1): 136-141.doi: 10.11843/j.issn.0366-6964.2014.01.019

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Study on Location and Distribution of Several Immunocytes in Crop of Chicken

LI Lei1,FENG Xiao-gang1,LIU Ying1,ERNEST D.Yeboah1,DONG Hong-yan1,MA Jin-ping1,LUAN Wei-min1,2*,YANG Shu-bao1*   

  1. ( 1.College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China;2.Key Laboratory of Animal Production & Product Quality and Security of Ministry of Education, Jilin Agricultural University, Changchun 130118, China)
  • Received:2013-07-16 Online:2014-01-23 Published:2014-01-23

Abstract:

Histological and Immunohistochemical techniques were used to observe the distribution and quantity of immunocytesT lymphocytes and its subpopulationB lymphocytesMononuclear/macrophage cells and APCsthen to analyze the immune function and establishment of the crop on histological and cellular level in chicken.The results showedThe lymphoid-tissues are located in the lamina propria at the junction of the crop and the cervical and thoracic parts of the esophagus.A significant count of CD3+CD4+CD8+ T lymphocytes are evident in the diffused lymphoid tissues and the interfollicular areas around germinal center where Bu-1b+ cells are located in.Parts of CD3+CD8+ cells and MHC-+ cells are infiltrated to the epitheliums of the mucus and the mucosal glandswhich are transformed to the lymphoepitheliumMa+ cells are slightly distributed in the Lamina propria submucosa muscular layer of mucosa and MHC-+ emerged in all of the tissues.The results showed that as the first storage place of food in chickenthe crop could be responsible for Moisturizing and softening food through mucus from mucus-producing oesophageal glands in lamina propriaas well as posses histological and cellular capacity of attendant mucosal immunity.The crop is an important part of gut-associated lymphoid tissue (GALT).

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