Lightning Round: Buy this if oil goes down

It's that time again! The Lightning Round bell has rung, and Jim Cramer gives his take on a few favorite audience stocks:

Acadia Pharmaceuticals: "I think that what they are doing could be a very big breakthrough, and I think it's a good spec."

U.S. Silica Holdings: "I like to go with high-quality best of breed, just in case oil goes down tomorrow on the inventory number. That is why I am recommending Schlumberger. This is the chance to refocus and get the best."

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Sprouts Farmers Market: "I see Whole Foods almost under $50, and I'm salivating. Why go downmarket when you can go with Whole Foods? That's the play."

GW Pharmaceuticals: "I have been very clear that this is the hope for families who have epilepsy. This is why I have been liking it, and they are getting good news. You are going to see more data next week and GW Pharma is a spec that has worked for us."

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