Summary of samples used in this study and cell expressing various genes in female-male and left-right embryonic gonads.

<p>F: Female; M: Male (** <i>p</i>-value <0.01, * <i>p</i>-value <0.05, Student’s <i>t</i>-test).</p><p>a₁: a comparison between female left and right gonad sections; b₁: a comparison between female left and right cortices; c₁: a comparison between female left and right medullae; a₂: a comparison between male left and right gonad sections; b₂: a comparison between male left and right cortices; c₂: a comparison between male left and right medullae.