Stockholders in TriPath Imaging approved the acquisition of the company by Becton, Dickinson on Tuesday.

The $350 million merger was expected to close on Wednesday.

Both TriPath, which is based in Burlington, and BD have facilities in Research Triangle Park.

BD agreed earlier this year to pay $9.25 a share for the 93.5 percent of TriPath stock it did not already own. TriPath shares (NASDAQ: TPTH) closed at $9.23 on Tuesday.