针灸用针能够刺激细胞产生腺苷酸，这是一种能够消炎止痛的化学物质，其效用在施针结束后一个小时达到峰值。

The needles stimulated cells to produce adenosine, an anti-inflammatory and painkilling chemical, that was effective for up to an hour after the therapy was over.

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发生此类现象是因为一个嵌合双胞胎会产生于没有得到雄性动物施精的卵, 但它会在某些皮肤细胞中含有该雄性动物的遗传基因.

This couldhappen because a chimeric twin that grew from an egg which his sperm did notfertilise would nonetheless have some skin cells containing his genes.

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虽然当PrP缺失时，施沃恩细胞会受到疾病侵袭，蛋白质还是应该存在于轴突以防止疾病发生。这项研究成果发表在本周的《自然——神经系统科学》。

Even though the Schwann cells are the ones affected when PrP is missing, the protein must be present in axons to prevent disease, the researchers report online this week in Nature Neuroscience.

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