在约翰霍普金斯大学培养的神经元不同于那些从肿瘤中挑选出来的神经元，它们并没有癌变，因此作为研究工具更具价值。

The neurons cultivated at Johns Hopkins—unlike those culled from tumors are not cancerous, and accordingly are much more valuable as research tools.

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与更常见的胶质瘤相区别是重要的，因为神经元肿瘤侵袭性更低些，并且预后较好。

Distinguishing these from the more common glial tumors is important because neuronal tumors are less aggressive and their prognosis is excellent.

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此外，尚有安全性方面的顾虑，因为有迹象表明从人干细胞分化来的多巴胺神经元可能引发肿瘤生长。

There have also been safety concerns, with signs that dopamine neurons developed from human stem cells can trigger the growth of tumors.

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