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XX/XY chimerism in a bovine true hermaphrodite: an insight into the understanding of freemartinism

H.O. Dunn, R.M. Kenney, Donald H. Lein

Open publisher page 24 citations

Abstract

The anatomic, histologic and cytogenetic findings on a bovine true hermaphrodite are discussed. The XX/XY chimerism in various tissues, including the kidney and testicular tissue of the ovotestis, combined with the presence of a uterus, cervix, vagina, seminal vesicles, penis and ovary provide evidence for dispermic fertilization involving two ova or an ovum and its nonextruded polar body. Circumstantial evidence regarding the mechanism of freemartinism is discussed.

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What this paper is about

The anatomic, histologic and cytogenetic findings on a bovine true hermaphrodite are discussed. The XX/XY chimerism in various tissues, including the kidney and testicular tissue of the ovotestis, combined with the presence of a uterus, cervix, vagina, seminal vesicles, penis and ovary provide evidence for dispermic fertilization involving two ova or an ovum and its nonextruded polar body. Circumstantial evidence regarding the mechanism of freemartinism is discussed.

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Available abstract

The anatomic, histologic and cytogenetic findings on a bovine true hermaphrodite are discussed. The XX/XY chimerism in various tissues, including the kidney and testicular tissue of the ovotestis, combined with the presence of a uterus, cervix, vagina, seminal vesicles, penis and ovary provide evidence for dispermic fertilization involving two ova or an ovum and its nonextruded polar body. Circumstantial evidence regarding the mechanism of freemartinism is discussed.

Key concepts: Hermaphrodite, Biology, Ovotestis, True hermaphroditism, Polar body, Uterus, Vagina, Penis

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