This Week in PNAS

In a study slated to appear in the early, online edition of the Proceedings of the National Academy of Sciences this week, an Ohio State University-led team assessed the expression of hundreds of microRNAs in ovarian cancer tumors, looking for those with expression profiles that coincided with chemotherapy resistance. Through an array-based analysis of almost 700 microRNAs in tumor samples from 86 women with ovarian cancer, researchers tracked down a 23-miRNA signature for chemoresistance.

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This Week in PNAS

This Week in PNAS

This Week in PNAS

This Week in PNAS

This Week in PNAS

This Week in PNAS

In Science this week: mtDNA analysis give glimpse into decline of Neanderthals in Europe, and more.

The University of Arizona's Raina Maier writes that an understanding of the Earth's microbiome is needed.

The proposed Canadian budget emphasizes partnerships with industry, Nature News reports.

An Australian study of personalized medicine has run into problems as it recruits patients.