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据最新报道，科学家最近在动物身上发现了幼崽为什么眷恋母亲的原因，他们找到了一个母亲吸引孩子的化学分子2MB2，这是由母亲乳腺分泌出的一种挥发性小分子，这种小分子属于外激素，它能够引导幼崽去寻找母乳。这一发现又重新引发了早已平息了一阵子的人类是否存在外激素的话
According to the latest report, scientists recently discovered on animals the reason why young cubs are attached to their mothers. They found a mother’s 2MB2 chemical molecule that attracts children. This is a volatile small molecule secreted by the mother’s mammary gland. Is a pheromone, it can guide the cubs to find breast milk. This discovery has rekindled the question of the existence of exogenous hormones in humans that have long since quelled for a while.