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Invitrogen, Norgen Bioteck

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Invitrogen launched its OptiCHO Express kit last week, designed “for the efficient growth and transfection of dihydrofolate reductase-deficient Chinese hamster ovary DG44 cells in suspension culture,” the company said.
 
The kit provides a complete workflow protocol for developing stable cell lines and includes components for expression vector construction, high-efficiency transfection of DG44 cells, and combinant protein expression in a serum-free environment with animal-free media, Invitrogen said.
 

 
Norgen Bioteck this week lauched its RNA/DNA/Protein Purification Kit. The kit allows researchers to isolate total RNA, genomic DNA, and proteins simultaneously from a single sample using one column, Norgen said. No additional supplemental protocols or acetone precipitation of proteins is needed, it said.

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.