potency

(Rockefeller University) Researchers identify gene that regulates apoptosis in stem cells. The work is the first to connect the death of stem cells to a later susceptibility to tumors in mice.

It provides evidence of the potentially carcinogenic downside to stem cell treatments, and suggests that nature has sought to balance stem cells' regenerative power against their potentially lethal potency.

Sanofi Pasteur has recalled about 800,000 doses of its vaccine against pandemic H1N1 influenza because of low potency, the CDC announced.

About 800,000 doses of swine flu vaccine for children are being recalled because tests found the strength of the shots had dropped, officials announced Tuesday.

Used anciently and promoted in the tenth centurty by Arab physicians, this native herb of Europe and Western Asia is still very popular in Europe today. It is also used as a flavoring agent in food and beverages. Encapsulated Valerian root with a...