title: Induction by heteroplastic grafts of the primitive streak in birds.
authors.affiliation: Strangeways Research Laboratory, Cambridge, England.|Laboratory of Experimental Zoology, Cambridge, England.
authors.forename: C H
authors.initials: CH
authors.lastname: Waddington
authors.affiliation: Strangeways Research Laboratory, Cambridge, England.|Laboratory of Experimental Zoology, Cambridge, England.
authors.forename: G A
authors.initials: GA
authors.lastname: Schmidt