Potentiated reagin response to egg albumin in Nippostrongylus brasiliensis infected rats. II. Time course of the reagin response.

The potentiated reagin response induced by infection with the nematode Nippostrongylus brasiliensis after sensitization with egg albumin and Bordetella pertussis vaccine was investigated to reveal the time course of the potentiated reagin response and the maximum reagin titre attained. The potentiated reagin response was found to be transitory but during this period high reagin titres to egg albumin were recorded. Rat sensitized to egg albumin and treated with N. brasiliensis crude worm extract instead of an infection did not show a potentiated response.