21.   Some patients must also take a synthetic form of aldosterone, fludrocortisone.

22.   That single gene also is in the synthetic form and does not have the ability to replicate itself and produce HIV, he said.

23.   The active ingredient, a synthetic form of morphine called oxycodone, produces a rapid high.

24.   The drug is a synthetic form of a blood protein called activated protein C that dampens down both inflammation and blood clotting.

25.   The key ingredient is ephedra, derived from the ma huang herb exported from China, or its components ephedrine and pseudoepehdrine, or synthetic forms made in labs.

26.   The modern pharmaceutical industry has frequently analyzed the active constituents of traditional medicines and makes use of them to this day, where synthetic forms cannot be produced.

27.   Tissue engineering involves transplanting cells onto synthetic forms where new tissue is generated.

28.   When the rats are given a synthetic form of dopamine, the ability is restored.

29.   While a synthetic form of a key ingredient of marijuana is available by prescription, the journal said, smoking marijuana provides rapid and more effective relief.

30.   With blood supplies dwindling and fears about blood safety growing, many companies are rushing to develop synthetic forms of blood and blood substitutes.