31.   But after a decade of legislative successes, including valuable tax breaks, speedier approval of drugs and patent extensions, the drug makers are suffering some defeats.

32.   But big drug makers were clearly delighted.

33.   But drug makers and technology companies gained.

34.   But critics say the pharmacy benefit management companies negotiate deals with drug makers that benefit themselves and the drug companies more than anyone else.

35.   But American drug makers say it destroys their patent rights and legalizes piracy.

36.   But drug makers and advertising agencies say inform and educate consumers.

37.   But for decades, the government has kept many foreign drug makers out.

38.   But in court papers, a generic drug maker has accused AstraZeneca of concealing information in a patent application for the drug.

39.   But in addition to competition from generic drug makers, biotechnology companies are facing new challenges from others in their industry.

40.   But now Genzyme Corp., which had steered clear of the big drug makers, wants to be a big brother itself.