Vaerman, J.-P., André, C., Bazin, H., & Heremans, J. F. (1973). Mesenteric lymph as a major source of serum IgA in guinea pigs and rats. European Journal of Immunology, 3(9), 580-584. https://doi.org/10.1002/eji.1830030911 (Original work published 1973)