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  • Title: Molecular and cytogenetic studies in a case of XX SRY-negative sex reversal in an Arabian horse.
    Author: Ciotola F, Albarella S, Pasolini MP, Auletta L, Esposito L, Iannuzzi L, Peretti V.
    Journal: Sex Dev; 2012; 6(1-3):104-7. PubMed ID: 22025175.
    Abstract:
    An 18-month-old Arabian foal characterized by a stallion-like appearance was submitted for cytogenetic and molecular genetics examinations due to abnormalities of external genitalia and the presence of ovotestis-like structures in the abdominal cavity. By RB-banding the animal showed the normal female equine karyotype (2n = 64,XX). Molecular analysis revealed the absence of the SRY and ZFY genes and the presence of ZFX, a typical female equine condition. The entire RSPO1 coding region was examined to exclude its involvement. Although a SNP was found in exon 3, it was not responsible for an amino acid substitution.
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