organism: Rattus norvegicus
attributes.tag: source_name
attributes.value: intestinal epithelial cell with tachyzoites and frozen sporozoites
attributes.tag: host cell line
attributes.value: ATCC IEC-18
attributes.tag: passage
attributes.value: 15-20
attributes.tag: infection
attributes.value: IEC-18 infected with tachyzoites in presence of frozen sporozoites
attributes.tag: toxoplasma strain
attributes.value: M4