Word: chickless
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Prolactin caused chickless hens and virgin rats to mother chicks and ratlets with great affection. This earned prolactin the nickname of "mother love" hormone. The implication of the discovery was that mother love, though doubtless fortified and colored in women by training and tradition has a physiological basis in a chemical substance-probably large protein molecules. (Dr. Riddle found that prolactin and other front-lobe hormones are disintegrated by trypsin, an enzyme which has the special property of "digesting" proteins...
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