title: In memoriam Johannes F. C. Holtfreter (1901-1992).
authors.affiliation: University of Arizona, Tucson 85724.
authors.forename: J T
authors.initials: JT
authors.lastname: Bagnara
mesh_terms: D002170:Canada; D015509:Developmental Biology / Q000266:history; D005858:Germany; D049673:History, 20th Century; D014481:United States