One basic example:
"Our study shows that the brain plays an important role in mediating resveratrol's anti- diabetic actions, and it does so independent of changes in food in take and body weight," (Dr. Coppari, Roberto).
and then, in the bibliography
"Study Shows How Substance in Grapes May Squeezeout Diabetes." University of Texas Southwestern Medical Center at Dallas. Web. 27 Oct. 2010.
I would suggest using easybib.com for MLA citations, as there are far too many different types of citations to describe adequately in a single answer. Remember, MLA changes every year, so what a citation looks like now is not what it may have looked like last year, or next year. See link below.
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