Thirteen normal white male volunteers (ages ranging from 20 to 53, mean 29 years) were investigated.

Interaction between oral ciprofloxacin and caffeine in normal volunteers.

Disposition and metabolism of the flavonoid chrysin in normal volunteers.

Indeed, a recent study using normal volunteers has shown that cooling rates were fastest when the coldest water was used".

Some beginning research suggests vinpocetine might enhance memory in normal volunteers.

It has already been used in a few clinical trials in normal volunteers and diabetics.

None of the patients or the normal volunteers had received antibiotics in the two weeks before the test period.

The normal range of responses to testing was taken from 47 studies carried out on normal healthy volunteers.

Late potentials may be found in 0-10% of normal volunteers.

They also stated that they would retain their weaponry but put them beyond reach of normal volunteers.