passages.id: split_1_test_1799_passage
passages.type: progene_text
passages.text: It was therefore recommended , with the agreement of all participants , that the preparation in vials coded 97 / 642 be established as the First International Reference Reagent for Pertussis Antiserum , mouse , with assigned unitages 16 units of anti - PT per vial , 143 units of anti - FHA per vial and 30 units of anti - PRN per vial based on its calibration in terms of US Lot 1 .