31.   Past studies had focused on the downside of a gloomy outlook on life.

32.   Other studies have focused on the challenges of being left-handed in a right-handed world.

33.   Previous studies focused solely on cancer and dementia.

34.   Previous studies have focused on growth hormone deficiencies in older men and women, a lack associated with increased obesity, loss of muscle mass and reduced exercise capacity.

35.   Some recent studies have focused on the effects of a hole in the ozone layer over the continent.

36.   Such studies would probably focus on the use of educational toys in the classroom.

37.   Studies will focus on the evacuation of overseas Japanese nationals by Self-Defense Forces vessels, preparations for accepting refugees from neighboring regions and other matters, officials said.

38.   That is because many doctors do not recognize these patients as dying, which accounts for why previous studies have focused so heavily on cancer.

39.   The latest study focuses on a substance called anandamide that is produced by the body and which acts very much like THC on a cellular level.

40.   The new studies focus on the radiation and chemotherapy that he received to kill some cells in his marrow to make space for the baboon cells.