Ribosomes, polysomes, mitochondria, RER and concentric ring- shaped RER are abundant and dictyosomes with vesicles are frequently seen, reflecting its active metabolism.

• 核糖体及聚合核糖体、线粒体、粗面内质网及同心圆环状粗面内质网丰富，高尔基体及小泡常见，反映了其活跃的代谢作用。