›› 2018, Vol. 45 ›› Issue (5): 1389-1394.doi: 10.16431/j.cnki.1671-7236.2018.05.033

Previous Articles     Next Articles

Study on Distribution of CD3+ Lymphocytes in Cattle Respiratory Tract

LI Yijiang1, BENG Dexin2, GUO Zhaoting3, YU Shaorong4, DING Hong1, YAN Xinquan1, ZHANG Shuguang1, YANG Ke1, GUO Zhaowei1, LUO Xiangbo1, LI Jiayun1, YANG Qian1   

  1. 1. College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China;
    2. Dehong Animal Disease Control Center, Dehong 678400, China;
    3. Agricultural Comprehensive Service Center of Fengping Town, Dehong 678400, China;
    4. Longchuan County Animal Disease Control Center, Dehong 678700, China
  • Received:2017-10-10 Online:2018-05-20 Published:2018-05-19

Abstract:

CD3+ is an important surface marker of T cell population.CD3+ lymphocytes which are distributed under respiratory tract mucosae as the basis of anti-infective mucosal immunity play an important role in protecting the body against respiratory infection.In order to understand the distribution profile of CD3+ lymphocytes and lymphoid tissues in cattle respiratory tract for the mucosal immune strategy of respiratory tract,the samples of nasal mucosa,trachea,pulmonary bronchia and lung from five 7-month-old health cattle were collected and the distribution of CD3+ lymphocytes and lymphoid tissues was tested by HE staining and immunohistochemistry methods.The results showed that CD3+ lymphocytes distributed in mucosal epithelium,below lamina propria and around gland in nose,trachea and pulmonary bronchia and lung.CD3+ lymphocytes form diffuse lymphoid tissue in nasal mucosa and lung.The number of the CD3+ lymphocytes were the largest in nasal mucosa and lung,followed by trachea and pulmonary bronchia.The results made clear the distribution profile of CD3+ lymphocytes in cattle respiratory tract.It indicated that the respiratory tract of cattle had the basic conditions for initiating local mucosal immunity.This study would provide the basic data for mucosal immunity in respiratory tract and prevention and treatment for respiratory disease in cattle.

Key words: cattle; CD3+ lymphocytes; lymphoid tissue; respiratory tract tissues

CLC Number: