First detection by polymerase chain reaction of Cryptosporidium spp isolates in excreta from domestic pigeon, Columba livia domestica, in the State of São Paulo, Brazil [abstract] - Carvalho-Almeida, T. T; Schuller, M; Cutolo, Silvana Audrá; Germano, Pedro Manuel Leal; Matté, Glavur Rogério; Matté, Maria Helena (Seminário Internacional em Protozoários Patogênicos Emergentes, 2006)