Evening primrose oil (EPO), is a member of the willow herb family, whose yellow flowers open during the evening and resemble the primrose plant, hence its name. Accidentally brought to Europe from ...
It is the active component in Amgen's blockbuster drug Epogen, US sales of which rose 21% to $1.8 billion in 1999. Amgen accused TKT of infringing five US patents, which claim EPO and its ...
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