Histology, immunohistochemistry and electron microscope were used to study the structures and functions of the endostyle of amphioxus (Branch iostma belcheri) and the thyroid gland of grey mullet (Mugil cephalus).
用组织学、免疫组织化学和透射电镜技术研究了文昌鱼内柱和鲻鱼甲状腺的结构和功能，并对二者进行比较。