Schumacher S K, Moltz H
Physiol Behav. 1985 Mar;34(3):471-3. doi: 10.1016/0031-9384(85)90214-8.
When rat young reach 27 days of age they stop responding to a pheromone carried in the feces of the lactating female. Because the consumption of such feces promotes the deposition of brain myelin, we suggested that response to the pheromone might continue as long as the amount of myelin per gram brain remained below adult levels. Our data support the suggestion. Pups deficient in myelin responded to the pheromone after 27 days of age.
当幼鼠长到27日龄时，它们就不再对哺乳期雌鼠粪便中携带的一种信息素产生反应。由于食用这种粪便会促进脑髓鞘的沉积，我们推测，只要每克大脑中的髓鞘量低于成年水平，对该信息素的反应可能就会持续。我们的数据支持这一推测。髓鞘缺乏的幼鼠在27日龄后仍对该信息素产生反应。
