U.S. and European antitrust regulators <A HREF="http://news.yahoo.com/s/ap/20080201/ap_on_hi_te/microsoft_yahoo_antitrust">aren't likely to prevent Microsoft from buying Yahoo,</A> analysts said Friday, though scrutiny of the deal could drag on for months.

A major factor weighing in Microsoft Corp.'s favor, analysts said, is Google Inc.'s dominance in the online search and advertising businesses--the two areas regulators are likely to focus on when weighing market power issues raised by the nearly $45 billion unsolicited bid.