Helicobacter pylori and cagA gene detected by polymerase chain reaction in gastric biopsies: correlation with histological findings, proliferation and apoptosis

by Katia Ramos Moreira Leite, Elaine Darini, Flavio Canelas Canavez, Claudia Muraro de Carvalho, Cristina Aparecida Troquez da Silveira Mitteldorf, Luiz Heraldo Camara-Lopes