NEW YORK--(BUSINESS WIRE)--MSMB Capital Management, a fund specializing in long-term strategic investments in healthcare and biotechnology businesses, today announced that it has made a proposal to the Board of Directors of SeraCare Life Sciences, Inc. (NASDAQ: SRLS) to acquire all the outstanding common stock of SeraCare for $4.25 per share or an aggregate of $82 million. This proposal represents an approximate 22% premium above the closing price of SeraCare stock of $3.49 on June 22nd, 2011.