21.   Industry observers say, however, that the most likely source for the additional funding is increased user fees collected from drug companies.

22.   Instead, investors this week got evidence that wages, viewed as the most likely source of faster inflation, were advancing more slowly than forecast.

23.   It views these as one of the most likely source of additional employment in the coming years, as traditional large employers cut back or shift jobs abroad.

24.   Labor costs are the most likely source of rising inflation, analysts say.

25.   Natural bodies of water, especially those that are stagnant or polluted, are the most likely source of infection, Soper said.

26.   One likely source of the dioxin-like compounds, Ludwig said, is the large amount of partly burned plastic ingested by albatrosses.

27.   Peruvian lettuce is the likely source of the six cases of cyclospora traced to Sforza Ristorante, a trendy downtown eatery, health officials said Tuesday.

28.   Russia is the most likely source.

29.   Rising wages are the most likely source of an increasing inflation rate because they translate into more dollars chasing fewer goods.

30.   Scientists had previously suspected that violent mergers of neutron stars, dense remnants of exploded stars, were the most likely sources.