杨还希望相关企业能够参与进来，他正在和一些药厂进行商谈，让他们能提供用于该项实验的第三种药物，这种药物能阻断神经元生长抑制剂的作用。

Young also hopes to involve industry. He is negotiating with pharmaceutical companies to provide a third element to add to the mix — drugs known to block the chemicals that inhibit growth of neurons.

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