This article has been updated to include comments from Affymetrix.

Earlier this year, a team of researchers introduced the highest-density microarray to date for studying lettuce.

Manufactured by Affymetrix, the 6.5-million-feature array was designed for polymorphism discovery and genotyping, as well as for analyzing gene expression in four species of the crop.

The chip was profiled in BMC Genomics in May, but by that time the tool was already obsolete.

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Jay Shendure and his colleagues have developed a new method to more comprehensively identify human cell types, the NY Times reports.

Researchers in the UK and Japan have shown that infertility in mice with three sex chromosomes can be overcome, according to the Guardian.

China is embracing preimplantation genetic diagnosis, Nature News reports. 

In PLOS this week: host genetic factors associated with cervical neoplasia progression, population patterns for an ancient flowering rainforest plant, and more.