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Cost and controversy are limiting use of new Alzheimer's drug

04:06
Amyloid plaques are characteristic features of Alzheimer's disease. The new drug Aduhelm is able to remove this sticky substance that builds up in the brains of patients with the disease, but many doctors are still skeptical of how well it really works. (Kateryna Kon/Science Photo Libra via Getty Images)
Amyloid plaques are characteristic features of Alzheimer's disease. The new drug Aduhelm is able to remove this sticky substance that builds up in the brains of patients with the disease, but many doctors are still skeptical of how well it really works. (Kateryna Kon/Science Photo Libra via Getty Images)

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