11.   Both single large doses and fractionated doses of radiation have been shown to alter small intestinal motility in animals.

12.   In the rat, very high single doses of intravenous mesalazine cause acute tubular and papillary necrosis.

13.   In contrast, Rijk et al evaluated the faecal excretions of healthy volunteers with accelerated transit time after a single dose.

14.   A single dose of psyllium has a moderate effect on gastric emptying and appetite, but further research is needed to define its efficacy on weight loss.

15.   Apparently the single dose is enough to stop bacterial growth before resistant strains can develop.

16.   A new Mayo Clinic study has found that a single dose of a steroid medication can significantly reduce the pain from a sore throat.

17.   A single dose of Ritalin, for example, acts quickly but only for a few hours, and most patients take it only on school days.

18.   A single inexpensive oral dose of antibiotics could easily and permanently cure the infection, but the women remain untreated.

19.   A single dose of iron briefly raised phytoplankton levels, but the test ended prematurely when the fertilized patch sank beneath waters of lesser density.

20.   A single dose of the antiviral drug nevirapine to mother and child could cut almost in half the number of infants who become infected at birth.