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After a prolonged takeover battle, Ventana Medical Systems has agreed at last to be acquired by Roche. In July 2007, after five months of trying to negotiate, Roche made a $75-per-share hostile takeover offer that Ventana's management called inadequate. Roche now has sweetened its offer to $89.50 per share, or a total of $3.4 billion. Based in Tucson, Ariz., Ventana produces reagents and instrumentation for the histopathology, or tissue-based, diagnostics market. Roche says the acquisition will broaden its diagnostics business and complement its efforts in oncology.
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