As the rising star of cell therapy biotechs, Iovance Biotherapeutics (IOVA 3.76%) is a hot stock that's capturing a lot of attention, and for good reason. Iovance's one-of-a-kind medicine is already selling like hotcakes, and there's reason to believe that plenty more growth is on the way.Let's take a look at why this stock is worth purchasing today and never looking back.Today, Iovance has a trio of bullish drivers are the legs of the stock's investment thesis.A rapidly growing marketFirst, Iovance's first ...