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In page Shirley M. Tilghman:

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During postdoctoral studies at the National Institutes of Health, Tilghman made a number of discoveries while a member of the team which cloned the first mammalian gene. She went on to demonstrate that the globin gene was spliced, a finding that helped confirm some of the revolutionary theories then emerging about gene behavior.[citation needed] As an independent investigator at the Fox Chase Cancer Center in Philadelphia from 1980 to 1986 and adjunct associate professor of Human Genetics at the University of Pennsylvania Tilghman continued to make scientific breakthroughs.[1]