31.   This week, students and adults inflated the balloons and stuffed them into enormous clear plastic sleeves that were lifted to the ceiling in anticipation of the big finish.

32.   Angioplasties involve threading a thin balloon-tipped catheter into clogged arteries and inflating the balloon to clear a blockage.

33.   Branson was still packing for the journey Tuesday and technicians were inflating the balloon at a military air base outside Marrakech when it tore away.

34.   Doctors can easily open clogged coronary arteries by briefly inflating a balloon, but often they close again, a situation called restenosis.

35.   Doctors thread balloon-tipped catheters into a blocked artery and inflate the balloon to open it up.

36.   If necessary, the procedure may be followed by an angioplasty, in which tiny balloons are inflated to dilate the arteries and increase blood flow.

37.   In angioplasty, doctors use a catheter to place a balloon inside a blocked artery and then inflate the balloon to collapse the blockage.

38.   In balloon angioplasty, a tiny balloon is inflated inside a blood vessel to compress fatty buildup on the artery walls.

39.   Inflating the balloon with a special liquid jacks up the collapsed bone so the cement can then be injected, restoring some height.

40.   Inflating the balloon with a mixture of hot air and helium takes hours and requires very light winds.