This Week in PNAS

In early online publication this week, scientists used microfluidic cards to profile miRNA expression in kidney transplants. They profiled seven renal allograft biopsies against 365 miRNAs and performed control expression analysis on 26 other transplants, finding a strong association between intragraft expression of both miRNAs and mRNAs and that acute rejection "could be predicted with a high level of precision using intragraft levels of miRNAs," they write in the abstract.

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