The list of regional banks taking advantage of government investments continues to grow, but so far there are some notable absentees.

Analysts say that, if they have failed to gain entry to the Treasury Department's Capital Purchase Program, it could write the epitaph for lenders such as Downey Financial Corp., BankUnited Financial Corp., and Vineyard National Bancorp that have conceded they need capital infusions to maintain themselves as stand-alone companies.

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