By a GenomeWeb staff reporter

NEW YORK (GenomeWeb News) – Problems with a reagent may have affected results from about 100 cancer diagnostics tests, Rosetta Genomics reported on Tuesday after the close of the market.

The affected test is the firm's miRview mets — a molecular test for cancer of unknown primary patients that identifies the tissue of origin of metastatic tumors.

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In Nature this week: omic analysis of permafrost microbes, hookworm genome, and more.

Biologists turn to environmental DNA sampling to determine whether elusive or invasive species are shedding DNA in a given area.

Rob Knight writes at Scientific American that microbiome studies are about to break out of the laboratory.

Harold Varmus, the director of the National Cancer Institute, has announced that he is stepping down after nearly five years.