WASHINGTON -- The National Institutes of Health has begun to withdraw its financial ties to Thereza Imanishi-Kari, the Tufts University immunologist accused of failing to support data in a 1986 Cell paper on gene expression. The decision parallels a new NIH investigation into the case that agency officials say has produced "mounting evidence of inconsistencies" in her work.

The latest chapter in the controversy, involving a paper whose coauthors include Nobel laureate David Baltimore, unfolded last month during a hearing before a House subcommittee chaired by Rep. John Dingell (D-Mich.). At issue in this third hearing in three years before the subcommittee was the validity of tapes from gamma ray counters in Imanishi-Kari's laboratory that generated data used in the experiments with transgenic mice.

Two Secret Service forensic scientists told the oversight and investigations subcommittee of the House Energy and Commerce Committee that their analysis of the material suggests that...

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