About ARNOLD J W
About Agricultural Res. Serv., USDA, Georgia
About HOLT P S
About Agricultural Res. Serv., USDA, Georgia
About Poultry Science
About laying hen
About B lymphocyte
About Chickens
About Animal infectious diseases caused by bacteria
About Immunological reaction in general
About 免疫
About 防備
About ニワトリ
About 宿主
About 腸炎菌
About 感染
About 応答