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Visual Demonstration of the Limb-forming Zone in the Chick Embryo Lateral Plate by Dr. Trent D. Stephens; Dr. Duane D. Sanders; Clementine Y. F. Yap is a Environmental Science article available to read on EtoBox.

What is Visual Demonstration of the Limb-forming Zone in the Chick Embryo Lateral Plate about?

## Abstract The present study was undertaken to determine whether a visible Wolffian ridge, distinct from the lateral fold, can be identified in chick embryos. Ectoderm thickness was measured in stage 11–17 chick embryos. There was a general trend, from thin ectoderm in the midline, to an ectodermal thickening over the somites, intermediate mesoderm, and lateral plate. Other embryos were cut from the yolk, pinned out, and photographed. The lateral fold was then eliminated, and the embryo was rephotographed. The photographs reveal a definite opaic zone, distinct from the lateral fold, in stage 11–18 chick embryos. Furthermore, there is a direct correlation between the opacity of this cellular band and the limb‐forming potential of grafted wing, flank, and leg regions (see Stephens et al., '89). At stages 11–14, the wing, flank, and leg exhibit a uniform opacity, and a uniform capacity for limb formation when grafted to a host celom. From stage 15 to stage 18, the opacity in the flank diminishes, and its limb‐forming capability disappears. This study demonstrates the presence of an opaic zone, which we have called the limb‐forming zone (LFZ) along the lateral side of early chick embr

Who reads Visual Demonstration of the Limb-forming Zone in the Chick Embryo Lateral Plate?

Author

Dr. Trent D. Stephens; Dr. Duane D. Sanders; Clementine Y. F. Yap

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0362-2525)

Published

1992

Language

EN

Field

Environmental Science (Physical Sciences)