a substance produced by the hypothalamus that is capable of accelerating the secretion of a given hormone by the anterior pituitary gland
同义词：releasing factor, releasing hormone, RF
a radioactive transuranic element which has been synthesized
同义词：rutherfordium, Rf, unnilquadium, Unq, element 104, atomic number 104
a complex neural network in the central core of the brainstem; monitors the state of the body and functions in such processes as arousal and sleep and attention and muscle tone
