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Related Experiment Videos

H-Y antigen in the chicken.

S S Wachtel1, G M Wachtel, D Nakamura

  • 1Division of Pediatric Endocrinology, Cornell University Medical College, New York, NY 10021.

Differentiation; Research in Biological Diversity
|January 1, 1983
PubMed
Summary

Chicken ovary development may depend on H-Y antigen (ovary inducer). The left gonad shows more H-Y antigen than the right, suggesting its role in female bird gonadal development.

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Area of Science:

  • Developmental Biology
  • Immunogenetics
  • Avian Biology

Background:

  • Asymmetrical ovarian development in birds is not fully understood.
  • The H-Y antigen is a potential inducer of the ZW (female) gonad.

Purpose of the Study:

  • To investigate the role of H-Y antigen in the asymmetrical development of the chicken ovary.
  • To compare H-Y antigen presence and function in left vs. right gonads of developing chickens.

Main Methods:

  • Comparing antibody absorption by left and right gonadal cells in 17-day embryos and 1-day-old hatchlings.
  • Studying soluble H-Y antigen uptake by gonadal cells at different developmental stages.

Main Results:

  • H-Y antigen is present in the left gonad of female chickens, less so in the right, and absent in male testes.
  • Preliminary data suggest the right ZW gonad may lack H-Y receptor sites near hatching.

Conclusions:

  • H-Y antigen expression appears necessary for ovarian development in birds.
  • Further research is needed to clarify if H-Y is the primary inducer or an accessory molecule in gonadal development.

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