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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.

Macquarie cited competition and potential budget cuts in downgrading Qiagen's shares, lowering its revenue and EPS estimates, and pushing down its target share price.

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AstraZeneca has released its coronavirus vaccine trial protocol, according to the New York Times.

Time magazine looks into how liquid biopsies are changing cancer care.

According to the Guardian, more than 150 countries have signed on to a global SARS-CoV-2 vaccine plan.

In PNAS this week: similar muscle protein patterns across hypertrophic cardiomyopathy phenotypes, analysis of gene expression and brain anatomy in major depression, and more.