part of part_of mixed endoderm/mesoderm-derived structure 混合内胚层/中胚层衍生结构 epithelium 上皮 thymus 胸腺 thymus epithelium 胸腺上皮 An epithelium that is part of a thymus, forming a supporting framework[MP,modified]. epithelial tissue of thymus epithelial tissue of thymus gland epithelium of thymus epithelium of thymus gland thymic epithelial tissue thymic epithelium thymus epithelial tissue thymus gland epithelial tissue thymus gland epithelium 是胸腺一部分，并形成支架的上皮[MP，modified]。 胸腺上皮(epithelium of thymus gland) 胸腺上皮(epithelium of thymus) 胸腺上皮(thymic epithelium) 胸腺上皮组织(epithelial tissue of thymus gland) 胸腺上皮组织(epithelial tissue of thymus) 胸腺上皮组织(thymic epithelial tissue) 胸腺上皮组织(thymus epithelial tissue) 胸腺上皮组织(thymus gland epithelial tissue) 胸腺上皮细胞 endo-epithelium 内切上皮 meso-epithelium 中胚层来源上皮