By a GenomeWeb staff reporter

NEW YORK (GenomeWeb News) – Goldman Sachs today upgraded PerkinElmer and Affymetrix but downgraded Thermo Fisher Scientific.

In a report outlining its outlook for 2012 in the broad medical technology space, analysts Isaac Ro and David Roman upgraded the investment firm's rating for PerkinElmer to Buy from Neutral, saying changes it has made in recent years has left it well positioned in the coming year.

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In Genome Research this week: multiplex genotyping of germline and somatic short tandem repeats, graph-based regularization, and more.

A lack of funding may lead more than two dozen research facilities in Australia to shut down in three months.

Researchers report that paternally inherited genes are more likely to be expressed in mice.

The US Supreme Court has declined to review a decision involving the use of "inadvertently shed" DNA in a police investigation and subsequent conviction.