title: The movement of zinc and copper from the fertilized egg into metallothionein-like proteins in developing chick hepatic tissue.
abstract: The movement of copper and zinc from the fertilized egg into the developing embryo and the subsequent association of the two metals with metallothionein-like proteins (MT) of chick liver was investigated. Hepatic levels of MT in 1-d-old chicks, estimated from specifically bound(115m)Cd, were increased eightfold over endogenous levels of these copper- and zinc-binding proteins in adult liver. Copper was assimilated from the oocyte into the embryo more rapidly than zinc in the early stages of embryogenesis. Between 15 and 16 d of development, during the time that (MT) was detected, there was a significant increase in copper concentration, whereas hepatic zinc concentration remained relatively constant.
authors.affiliation: Department of Biological Sciences, University of New Orleans, 70148, New Orleans, LA.
authors.forename: B C
authors.initials: BC
authors.lastname: Sandrock
authors.forename: S R
authors.initials: SR
authors.lastname: Kern
authors.forename: S E
authors.initials: SE
authors.lastname: Bryan