X trisomy in an infertile bitch: cytogenetic, anatomic, and histologic studies
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Updated: Oct 16, 2026

Exploring X Chromosomal Aberrations in Ovarian Cells by Using Fluorescence In Situ Hybridization
Published on: April 7, 2023
M Switoński1, S Godynicki, H Jackowiak
1Department of Genetics and Animal Breeding, Agricultural University of Poznań, Poland. switonsk@jay.au.poznan.pl
Abstract:
Three copies of the X chromosome were identified in a 5-year-old mixed breed infertile bitch. One year after the cytogenetic examination, the bitch died due to gastritis hemorrhagica, an inflammation of the mucus coat of the stomach. Dental studies showed congenital lack of some premolar and molar teeth. Ovaries were of normal shape and size. Also, histologic sections of the ovaries revealed their normal structure, with two corpora lutea and primary follicles. Phenotypic effects of X trisomy are discussed.
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