The invention relates to the use of a polypeptide that comprises i) a first portion comprising the part of human Fc that binds to CD64, and ii) a second portion comprising one or more heterologous T cell epitopes for stimulating a cytotoxic T cell response. The polypeptide may be an antibody that may be used to stimulate a cytotoxic T cell response against pathogens and tumor cells in patients in need of such treatment.
