Biotechnology companies are getting worried that what they call "the European disease" of opposition to genetically modified food is spreading to the United States.Activists opposing genetic modification and a variety of other causes staged protests in San Francisco yesterday as 18,000 delegates gathered for the world`s biggest biotech conference, Bio 2004.</p><p><a href="http://www.nzherald.co.nz/business/businessstorydisplay.cfm?storyID=3571114&thesection=business&thesubsection=technology&thesecondsubsection=bio&thetickercode=">The New Zealand Herald</a>