用一种名为miR-302b的分子治疗的小鼠可以再生脱发，并保持大脑健康。给年老的小鼠注射一种RNA分子似乎可以逆转衰老的一些迹象——帮助它们活得更长，重新长出毛发，保持身体和智力的能力。

The test involves presenting a subject with images of inkblots; the person then describes what they see in these blots. The test can purportedly assess personality, emotional functioning ...