nèi fēn mì
endocrine (internal secretion, e.g. hormone)
nèi fēn mì xiàn
endocrine gland
gland producing internal secretion, e.g. hormone
wài fēn mì
exocrine
external secretion (e.g. saliva)
wài fēn mì xiàn
exocrine gland
gland producing external secretion (e.g. saliva)