Shares in Sequenom dropped 9.2 percent for the five-day trading week ended Tuesday to lead all decliners in the BCW Index. It was the second week in a row that Sequenom’s shares lost value, though there has been no recent news regarding the firm. Sequenom filed a prospectus earlier this year for the possible sale of common shares.
Bruker BioSciences led gainers for the week with a 5 percent jump in its stock. Bruker’s stock has been trading near its 52-week high of $11.36.

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The US National Science Foundation's new sexual harassment policy is to go into effect next month, according to Nature News.

Researchers report using genotyping to tie together illegal ivory shipments and trace them back to a handful of cartels, the New York Times reports.

Researchers find that historical factors influence which genes are the most highly studied, the Atlantic reports.

In Nature this week: genomic ancestry analysis of Sardinians, current noncoding mutations in colorectal cancer, and more.