In an unusual display of bipartisanship on an issue that has divided Congress for years, the House overwhelmingly approved a biomedical research bill Friday that would change how the National Institutes of Health grants money to institutions like the Johns Hopkins University. The measure, approved on a 344-77 vote, would provide $1.75 billion in additional annual funding to the Bethesda-based NIH in exchange for the agency's placing a greater emphasis on young scientists - who often struggle to win grants - and requiring more accountability in grant making.