endocrine
hormone
internal secretion
adiponectin
cortisol
cytokine
dopamine
epinephrine
ferritin
gastrin
glucocorticoid
glutamate
hemoglobin
histamine
interleukin-1
lycopene
neurotransmitter
neurotransmitters
progesterone
prolactin
seratonin
testosterone
thyroid
vasopressin
ronin
serotonin