Changes in Peyer’s Patch and Cecal Tonsil B Lymphocytes in Laying Hens Following Challenge with Salmonella enterica Serovar Enteritidis

Peter S. Holt, Lara E. Vaughn and Richard K. Gast

International Journal of Poultry Science 10 ( 3 ): 231 - 237 , 2011

Frequency and Magnitude of Internal Organ Colonization Following Exposure of Laying Hens to Different Oral Doses of Salmonella enteritidis

Richard K. Gast, Rupa Guraya, Jean Guard and Peter S. Holt

International Journal of Poultry Science 10 ( 4 ): 325 - 331 , 2011

Effect of Prior Passage Through Laying Hens on Invasion of Reproductive Organs by Salmonella enteritidis