Morphological Characteristics of Symmetrically Developed Ovaries in a 17-day Incubated Chicken Embryo

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  • Naito Mitsuru
    Transgenic Animal Research Center, National Institute of Agrobiological Sciences, Japan
  • Harumi Takashi
    Animal Genome Research Unit, National Institute of Agrobiological Sciences, Japan
  • Kuwana Takashi
    Laboratory of Intellectual Fundamentals for Environmental Studies, National Institute for Environmental Studies, Japan

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Abstract

Morphological characteristics of symmetrically developed ovaries observed in a 17-day incubated chicken embryo were analysed. The size and shape of the left and right ovaries were almost the same, but in histological analysis they have less developed cortex and many large lacunae in the medulla compared to a normal left ovary. The histological structure of both the left and right ovaries was, thus, incomplete compared with the normal left ovary, probably due to the effect of the right ovary developing similar to the left ovary without regression.

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