Difficulties, guidelines and review of developing an acute rejection model after rat intestinal transplantation - Andres AM; Santamaria M; Hernandez-Oliveros F; Guerra L; Lopez S; Stringa P; Vallejo MT; Largo C; Encinas JL; Garcia de las Heras MS; Lopez-Santamaria M; Tovar JA (Transplant Immunology, 2016)