SirA, CsrBC and HilD form in vivo a regulatory cascade that controls the SP1-1 and SPI-2 gene expression when Salmonella Typhimurium is in the intestinal lumen and are required for cecal colonization and liver dissemination in the avian model. - Gómez-Chávez, José de Jesús; Pico-Rodríguez, Jwerlly Tatiana; Juárez-Ramírez, Mireya; Martínez-Jarquín, Hugo; Martínez-Chavarría, Luary C. (Archives of Microbiology, 2025)