31.   She speculates that the American tractor seat was the likely source of the cantilevered chair by the modern Finnish designer, Alvar Aalto.

32.   That letter had been considered the likely source of infection for all the anthrax cases in and around Washington.

33.   That letter is the likely source of the infections that killed two Washington postal workers and sickened two others.

34.   The most likely source of funds is federal health dollars already promised to Los Angeles but not delivered.

35.   The mycoplasma, they believe, is a likely source of medical ailments that have been reported by spouses and children of returning Gulf War troops.

36.   The most likely source of the infection, Hirsch said, was the transfusion I received during my hand surgery.

37.   The line need not come from embryonic stem cells, but they are a likely source.

38.   The method is to search for hydrogen in such high quantities as to imply ice as the likely source.

39.   The most likely source of the infection was the ground beef in the tacos, even though health officials said they did not find E. coli in the leftovers.

40.   The police knew where to look for the likely source of the ammonium nitrate.