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Did you miss last night's "Mad Money" on CNBC? If so, here are Jim Cramer's top takeaways for today's trading.

Spark Therapeutics (ONCE - Get Report) : In a Mad Money exclusive, Cramer sat down with Jeff Marrazzo, co-founder and CEO of Spark Therapeutics, the biotech developing one-time gene therapies for hemophilia and other genetic diseases.

Marrazzo said Spark's clinical trial for its retina therapy saw 93% of patients show a response, with some patients regaining parts of their vision after just a one-time treatment. He said the responses have been highly consistent and very robust, which is encouraging news for all of their therapies.

Presently, Spark is developing genetic therapies for the retina, liver and central nervous system.

When asked about the current debate in Washington over drug pricing, Marrazzo said therapies like Spark's have never been seen before, with patients regaining functions they had previously lost. Given the long-lasting benefits patients are seeing, Marrazzo said it's time to rethink how companies are reimbursed for their efforts. Spark is leading in those conversations.

General Mills (GIS - Get Report) , Kellogg (K - Get Report) , ConAgra Foods (CAG - Get Report) and Campbell Soup (CPB - Get Report) : Safety, it appears, just costs too much, Cramer told viewers, as he circled back to the consumer packaged goods companies that have been having a tough quarter.

Cramer said Wednesday's guidance cut from General Mills was surprising, as this company has been one of the steadiest earners around. The company cited rising competition in the yogurt space for its weakness.

Another food stock, Campbell Soup has seen its shares fall over 10% in just the past four months for similar reasons. Cramer noted that after a big run higher, the company's shrinking dividend yield now offers little protection.

Whether it's Kellogg or ConAgra Foods, Cramer advised keeping one finger on the sell trigger because the food space is becoming increasingly difficult to gauge.

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At the time of publication, Cramer's Action Alerts PLUS had no position in stocks mentioned.