Supplementary Appendices for "Quantitative Postnatal Maturation of the Feline Testis from 6 to 36 Months: A Stereological and DHH Immunomorphological Analysis"

These supplementary appendices provide the complete stereological and morphometric data supporting the manuscript “Quantitative Postnatal Maturation of the Feline Testis from 6 to 36 Months: A Stereological and DHH Immunomorphological Analysis” Appendix A.1 includes graphical representations of age-dependent stereological dynamics of Leydig, Sertoli, and germ cells (Figure A1). Appendix A.2 provides detailed numerical stereological estimators for all analyzed variables across age groups (Table A1). All data are presented as medians ± interquartile range (IQR) and analyzed using nonparametric tests (Kruskal–Wallis with Dunn’s post hoc). These materials ensure transparency and reproducibility of the stereological and morphometric analyses. Appendix A.3, which provides the full numerical outputs of the Principal Component Analysis (PCA), including eigenvalues, percentage of explained variance, variable loadings for PC1 and PC2, and individual scores used to generate the PCA score and loading plots presented in Figure 3.本补充附录提供了完整的体视学（stereological）与形态计量学（morphometric）数据，用以支撑题为《6至36月龄猫睾丸的产后成熟定量研究：体视学与DHH免疫形态学分析》的学术论文。 附录A.1 收录了莱迪希细胞（Leydig cell）、塞尔托利细胞（Sertoli cell）与生殖细胞随年龄变化的体视学动态特征的可视化图表（图A1）。 附录A.2 提供了各年龄组中所有分析变量的详细体视学数值估计量（表A1）。所有数据均以中位数±四分位距（interquartile range, IQR）的形式呈现，并采用非参数检验（克鲁斯卡尔-沃利斯检验结合邓恩事后检验）进行统计分析。本部分材料可确保体视学与形态计量学分析的透明度及可重复性。 附录A.3 收录了主成分分析（Principal Component Analysis, PCA）的全部数值输出结果，包括特征值、解释方差占比、主成分1（PC1）与主成分2（PC2）的变量载荷，以及用于生成图3所示PCA得分图与载荷图的个体得分数据。