1. Mesodermal induction in early amphibian embryos by activin A (erythroid differentiation factor);Asashima;Roux's Arch. Dev. Biol.,1990
2. Marginal zone cells, the primitive streak-inducing component of the primary hypoblast in the chick;Azar;J. Embryol. Exp. Morphol.,1979
3. Interaction of epiblast and hypoblast in the formation of the primitive streak and the embryonic axis in the chick, as revealed by hypoblast rotation experiments;Azar;J. Embryol. Exp. Morphol.,1981
4. The relation of primary hypoblastic cells underneath the developing primitive streak allows for their prolonged inductive influence;Azar;J. Embryol. Exp. Morphol.,1983
5. Changes in the expression of the carbohydrate epitope HNK-1 associated with mesoderm induction in the chick embryo;Canning;Development,1988