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Hum Genet. 1980;55(3):321-5.

Aberrant testicular differentiation in 46,XY gonadal dysgenesis: morphology, endocrinology, serology.


In an infant with gonadal dysgenesis and somatic anomalies, the internal and external genitalia were female but the gonads contained tubular structures suggesting male differentiation. The karyotype was 46,XY with no evidence of structural aberration or mosaicism. Hormonal metabolism and H-Y antigen expression were assayed in cultured gonadal cells. Although unable to synthesize testosterone, the cultured cells were able to convert it to dihydrotestosterone. H-Y antigen was present, perhaps at a level lower than that in cells from normal XY males. Our observations indicate that a modicum of testicular organogenesis may precede the involution that results in a streak gonad in some cases of gonadal dysgenesis.

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