Use for old Christmas trees? Douglas fir needles may sterilize nano devices for medical applications

As twelfth night approaches and the Christmas decorations start to look old, as the last crumbs of cake are swept away and the remnants of the turkey have finally been consumed, there is the perennial question as to what to do with the tree. New suggests that the needles of the plant Pseudotsuga menziesii, commonly known as the Douglas fir could be used indirectly to sterilize nano devices destined for medical applications.

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