Number of genes involved in epigenetic regulation by tissue and by category in IUGR rats.

Significant p values, calculated by a χ2 contingency test are indicated in bold characters. The numbers represent the count of modified and not modified genes for each category and each tissue analyzed (see also figure 1).经卡方列联检验（χ2 contingency test）计算得到的显著p值，以粗体字符标注。所列数值代表各分析类别与各分析组织中，经修饰与未修饰基因的计数（详见图1）。