Technological progress sometimes renders products or entire industries completely obsolete. That's true even within the healthcare sector, which as a whole is unlikely to fall out of style anytime soon. Even so, individual healthcare companies must constantly innovate to stay relevant and deliver consistent performances over the long run.

With that said, let's look at two healthcare stocks with solid track records of innovation and are worth buying and holding onto for good: Regeneron (NASDAQ: REGN) and Abbott Laboratories (NYSE: ABT).

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Source Fool.com