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The analyst said that the launch of GTG's BrevaGen test in the US in June is expected to "add significantly to revenues from FY 13 and profit in FY 14."

Several analysts lowered EPS, revenue, and price target estimates for Life Tech, though one analyst cited a bright note on the company's Ion Torrent business.

Analyst Amit Bhalla said that trade-in revenue from customers who purchase the HiSeq 2000 platform would not be a "significant contributor," and trimmed total revenue estimates for the second quarter and full-year 2011.

The bank cited a lack of apparent competitive bids to acquire Gen-Probe in dropping its price target to $75.

In a research note, the investment house cited concerns about Cepheid's high price-to-sale ratio but said that the firm's installed base is expected to grow 27 percent year over year in 2011.

The investment firm lowered EPS estimates for Illumina on an expected shift to the MiSeq platform from the HiSeq system, but said that in a short amount of time Illumina's desktop sequencer would overtake Ion Torrent's PGM as the market leader.

The bank raised its price target on Cepheid's stock from $33 to $38 and upped its revenues and EPS estimates for 2012.

The investment firm lowered revenue estimates and the share-price target for Nanosphere following the FDA's denial of the company's Plavix metabolism test.

Jefferies also increased the firm's stock price target to $20 from $15.50.

Shares of the company climbed as much as 13 percent, and in an analyst note, R.W. Baird said incoming CEO Frank Witney could return Affymetrix to top-line growth.

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New results from the NASA Twins Study indicate that the immune system may rev up when in space, the Washington Post reports.

Kelvin Droegemeier, the new science advisor, spoke at the American Association for the Advancement of Science meeting, Geekwire reports.

In PNAS this week: whole-genome assembly for the white shark, paper-based microfluidic method for detecting the malaria parasite, and more.

The World Health Organization has announced the members of its gene-editing committee, according to NPR.