Excision of an Unstable Pathogenicity Island in Salmonella enterica Serovar Enteritidis Is Induced during Infection of Phagocytic Cells. - Quiroz, Tania S.; Nieto, Pamela A.; Tobar, Hugo E.; Salazar-Echegarai, Francisco J.; Lizana, Rodrigo J.; Quezada, Carolina P.; Santiviago, Carlos A.; Araya, Daniela V.; Riedel, Claudia A.; Kalergis, Alexis M.; Bueno, Susan M. (PLoS ONE, 2011)