NEW YORK (GenomeWeb News) – Shares of Qiagen rose around 6 percent in Friday trade on the Nasdaq after rumors circulated in Europe that French drugmaker Sanofi-Aventis was mulling a €14.50 ($20.29) per share bid to acquire the firm.

Neither firm would comment on the rumors.

The rumored acquisition price represents a 26 percent premium over Qiagen's Thursday closing price of $16.05. In Friday afternoon trade, Qiagen's shares were up 6 percent at $17.01.

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Technology Review reports that researchers in the US have used CRISPR to modify a number of human embryos.

Plant researchers plan to sequence some 10,000 samples that represent the major plant clades, ScienceInsider reports.

By introducing genes from butterfly peas and Canterbury bells, researchers in Japan have developed a blue chrysanthemum, according to NPR.

In Nature this week: a Danish reference genome, and more.