Lightning Round: Good chance this is downgraded

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

Novavax: "You're right to be concerned, and this is not the kind of market for Novavax. If you want to go spec, you do Regeneron. You would have to buy one share versus 100, but that's what I would go for."

Lam Research: "It's really good! You have to be careful because there's a good chance someone will downgrade it tomorrow because of the Intel, but I like Lam."

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Mastercard: "A great buy right now. They did that spot secondary which was just a guide going from B to A. I think you definitely want to buy it here while it's down on a discount."

Seattle Genetics: "No. I like it, but I do like others better. There's nothing I can do, I like the BioMarin better and I do like Isis better."

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