title: A fragment corresponding to the C(H)2 region of immunoglobulin G (IgG) with complement fixing activity.
authors.affiliation: Department of Biochemistry and Institute of Immunology, University of Toronto, 181, Toronto, Canada
authors.forename: J R.
authors.initials: JR
authors.lastname: Ellerson
authors.forename: D
authors.initials: D
authors.lastname: Yasmeen
authors.forename: R H.
authors.initials: RH
authors.lastname: Painter
authors.forename: K J.
authors.initials: KJ
authors.lastname: Dorrington