Holt, P. S.; Vaughn, L. E.; Gast, R. K. Changes in Peyer’s Patch and Cecal Tonsil B Lymphocytes in Laying Hens Following Challenge With Salmonella Enterica Serovar Enteritidis. Int. J. Poult. Sci. 2011, 10 (3), 231–237. https://doi.org/10.3923/ijps.2011.231.237.