LEXINGTON — A Lexington scientist who has joined an international group of experts trying to clone the first human has twice faced questions about his research, according to court records.

        In 1994, Panayiotis Zavos was fired by Central Baptist Hospital after officials found evidence suggesting he was performing fertility services at the hospital and having patients pay him directly.

        Court records also show that, in August 1994, the University of Kentucky's Medical Institutional Review Board looked into allegations that Mr. Zavos used human sperm specimens without patients' consent in a UK research project.

        Mr. Zavos, 57, a reproductive physiologist, was a professor of animal sciences at UK from 1979 until he retired this year.

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