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NEW YORK ( TheStreet) -- Here's what Jim Cramer had to say about some of the stocks callers offered up during the "Mad Money Lightning Round" Wednesday evening: Opko Health ( OPK): "This one is very speculative and you have to bear with them before they reload." Omeros ( OMER): "I said last week to take profits in these speculative biotechs." Groupon ( GRPN): "I like Groupon. It's got a good CEO." Molycorp ( MCP): "No, no, no. I like a good balance sheet and they don't have it." To read a full recap of "Mad Money" on CNBC, click here. To sign up for Jim Cramer's free Booyah! newsletter with all of his latest articles and videos please click here. To watch replays of Cramer's video segments, visit the Mad Money page on CNBC. -- Written by Scott Rutt in Washington, D.C. To email Scott about this article, click here: Scott Rutt Follow Scott on Twitter @ScottRutt or get updates on Facebook, ScottRuttDC