These endothelial cells have a large number of mitochondria and ribosomes suggesting an increased state of activity which may be related to their functions, transporting both cells and antigens.

• 这些内皮细胞含有大量的线粒体和核糖体，表明其活性状态增强，而且这种状态可能与它们的功能（转动细胞和抗体）有关。