11.   First, it indicates the feasibility of drugs to enhance the effects of favorable genes and to counteract those of the unfavorable ones.

12.   FDA officials said they later found out that cigarette makers were adding ammonia to cigarettes too, to enhance the effects of nicotine.

13.   Frustratingly brief snippets of performances by Cassandra Wilson and Mose Allison certainly enhance the effect.

14.   He said tobacco in cigarettes was routinely treated with chemicals to enhance the effect of the nicotine.

15.   Holograms might one day replace the TV monitors used for video conferencing, to enhance the effect of the physician being present in the room.

16.   In the past, public health groups have charged that tobacco companies use ammonia in cigarettes to enhance the effect of nicotine.

17.   In the original rooms, every inch enhanced the effect of the whole.

18.   Researchers have developed a series of nicotine-like compounds to enhance certain effects to make them more useful for particular diseases while reducing unwanted side effects.

19.   Rohmer uses the flat, washed-out texture of digital video to enhance this effect.

20.   She can be as tough as Weaver, too, and somehow her diminutive frame and nasal squeak enhance the effect.