Resistência de cepa de Biomphalaria tenagophila, originária de Londrina (Paraná, Brasil) à infecção por duas cepas de Schistosoma mansoni

Abstract

Strains of Biomphalaria tenagophila from Londrina showed complete resistence to infection with Schistosoma mansoni, when the snails were exposed to the sympatric strain of the trematode or to the strain from Belo Horizonte, Minas Gerais State. The resistence has been retained even when the diameter of the shell of the snails and the number of miracidia used to infect each snail, were altered.