Some ductless glandsproduce several different hormones .

有些无管腺产生几种不同的激素.

Research on the energy saving and safety of ductless fume hood .

无管排风柜的节能与安全性研究。

Endocrine system : group of ductless glands that secrete hormones necessary for normal growth and development , reproduction , and homeostasis .

内分泌系统:由无管腺体组成的系统,分泌激素(荷尔蒙)以供身体正常生长、发育、繁殖和自我恒定性之需。

In 1841 friedrich gustav henle first recognized ductless glands , which secrete products directly into the bloodstream .

841年亨勒首度发现「无管腺体」，能将其产物直接输入血液中。

" Other endocrine glands include the pituitary , the thyroid and parathyroid , the adrenals and the ovaries and testes . Some ductless glands produce several different hormones . "

其它内分泌腺有垂体腺、甲状腺、甲状旁腺、肾上腺、卵巢腺与睾丸腺。有些无管腺产生几种不同的激素。