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William Cotter, Daniel Calvo, George Dunbar, Dmitry Samarsky

Helicos Biosciences has appointed William Cotter as vice president of operations, the company said this week. Cotter formerly was vice president of operations at Closure Medical Corporation, and before that worked at Sanofi Diagnostic Pasteur, which was purchased by Bio-Rad Laboratories in 1999. Helicos disclosed Cotter's appointment as part of its announcement that it has begun manufacturing its Heliscope genome sequencer.
 

 
Accuri Cytometers has appointed Daniel Calvo and George Dunbar to its board of directors.
 
George Dunbar is president, CEO, and a director of Aastrom Biosciences, and has served as CEO of Quantum Dot, Targesome, Epic Therapeutics, Cytotherapeutics, Stem Cells, and Metra Biosystems.
 
Dan Calvo is president and CEO of Assay Designs, and previously was CEO of Cellomics. He has also been head of worldwide sales in PerkinElmer’s Life and Analytical Sciences division.
 

 
CytRx subsidiary RXi Pharmaceuticals has named Dmitry Samarsky as vice president of technology and development
 
Samarsky has been director of technology and development at Dharmacon, business development manager at Invitrogen, and was in business development at Sequitur, which was purchased by Invitrogen.

The Scan

Tens of Millions Saved

The Associated Press writes that vaccines against COVID-19 saved an estimated 20 million lives in their first year.

Supersized Bacterium

NPR reports that researchers have found and characterized a bacterium that is visible to the naked eye.

Also Subvariants

Moderna says its bivalent SARS-CoV-2 vaccine leads to a strong immune response against Omicron subvariants, the Wall Street Journal reports.

Science Papers Present Gene-Edited Mouse Models of Liver Cancer, Hürthle Cell Carcinoma Analysis

In Science this week: a collection of mouse models of primary liver cancer, and more.