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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Stain used to stain X chromosome
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The correct answer is  Barr body is formed due to random inactivation or condensation of one of the 2 female chromosomes in all the somatic cells of female mammals. Buccal smears are known to be potential source of Barr bodies. Acriflavin schiff stain was used in staining these Barr bodies. Ref: NCBI.org