Murine Peyer's patches are capable of generating a cytotoxic T cell (CTL) response to nominal antigens.

London, S. D., Rubin, D. H., & Cebra, J. J. (1987). Murine Peyer’s patches are capable of generating a cytotoxic T cell (CTL) response to nominal antigens. Advances in Experimental Medicine and Biology, 216 A, 267–278. https://doi.org/10.1007/978-1-4684-5344-7_31