31.   To stimulate appetite, patients can take Marinol, a synthetic version of THC that comes in pill form, or Megace, a derivative of the hormone progesterone.

32.   When the author was in medical school, she was led to believe that estrogen replacement in menopause consisted exclusively of the synthetic version.

33.   Wood has patented synthetic versions of these compounds.

34.   A synthetic version carries less of a risk of allergic reactions, Talarico said.

35.   A synthetic version of a fertility hormone reverses some of the crippling, disfiguring effects of the sometimes-fatal tissue disease scleroderma, researchers found.

36.   A synthetic version is produced by Chiron Corp. and is federally approved for the treatment of melanoma and kidney cancer, but not AIDS.

37.   Athletes can improve their performance greatly by taking the synthetic version, but if the dosages are not monitored the practice can be fatal.

38.   Both supplements are synthetic versions of body substances that help build cartilage, the tough tissue that lines the joints.

39.   But the researchers said their synthetic version, called a beta-peptide, appears not to harm blood cells or break down within the body.

40.   Doctors struggling to diagnose pancreatic illnesses will soon get a new aid, as the U.S. government approved the first synthetic version of the hormone secretin Friday.