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reticular formation, RF | 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 | |
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releasing hormone, releasing factor, RF | a substance produced by the hypothalamus that is capable of accelerating the secretion of a given hormone by the anterior pituitary gland | |
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rutherfordium, Rf, unnilquadium, Unq, element 104, atomic number 104, eka-hafnium | a radioactive transuranic element which has been synthesized |