September 1, 2010: TORONTO (Dow Jones)--Hamilton Thorne Inc. (HTL.V) is clearing the way for major breakthroughs in stem-cell research.

The Beverly, Mass.-based company makes lasers that can clean up stem-cell samples by sweeping away regular cells. Chief Executive Meg Spencer says its "mini lasers" are more accurate and cheaper than conventional technologies.

Traditional lasers resemble using a hand shovel to weed a giant field. Instead, Hamilton Thorne offers an automated laser that can sweep back and forth with precision, she says.

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