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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 Monday evening:
Keryx Biopharmaceutical (KERX) : "That one is too speculative for me. You're on your own with that one."
Intel (INTC) : "Intel is underrated by Wall Street. I say yes to that one."
General Motors (GM) : "This is too difficult to own and I'm not going to recommend it to anyone."
International Business Machines (IBM) : "I'd sell IBM on any lift. I don't think they know what they're doing."
Altria (MO) : "It's time to take profits in that stock. "
Westport Innovations (WPRT) : "They over-promised and under-delivered. I say do not own that stock."