51.   Because the Indian leader is not considered an easy conversationalist, there was some uncertainty among administration officials about how the talks would proceed.

52.   Behind much of the turmoil is uncertainty over the short-term effect that unstable world markets will have on domestic companies.

53.   Beyond that are uncertainties.

54.   -- uncertainty about taxes is back with a vengeance.

55.   A local analyst who follows Scotts said, however, that there is some uncertainty about how well the businesses fit together.

56.   A particularly crucial uncertainty is how many spores one must inhale to contract a case of inhalation anthrax, which is fatal if not quickly treated with antibiotics.

57.   A. I am more optimistic now, because back then there was so much uncertainty.

58.   After that, there was uncertainty.

59.   But Clemants acknowledges that there is still uncertainty.

60.   But even as new approaches show promise, there is much uncertainty about which patients, if any, are likely to benefit from specific treatments.