This article has been updated to clarify comments from Anya Prince of the Cancer Legal Resource Center. The article inaccurately cited Prince as stating that some states mandate coverage for BRCA testing. Prince was referring to mammograms, which have mandated coverage by some states, not BRCA tests, which do not.

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In Nature this week: method to detect single-nucleotide and copy-number alterations in single cells from archival tissue, and more.

China has announced new rules governing the use of stem cell treatments, Nature News reports.

Wired's Sarah Zhang expresses frustration as a microbiome study of homes uncovers expected bacteria.

A database containing genome sequences from strains of foodborne pathogens may enable regulators and companies to quickly identify outbreak sources, Reuters reports.