Novartis (NVS - Get Report) agreed to acquire AveXis (AVXS) for $8.7 billion on Monday. 

"This is squarely in the crosshairs of Biogen (BIIB - Get Report) which has that great deal with Ionis (IONS - Get Report) ," said TheStreet's founder and Action Alerts PLUS Portfolio Manager Jim Cramer.

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