23andMe raised an additional $250 million in 2017.Kimberly White/Getty Images for Vanity Fair

There was no shortage in funding for healthcare and biotech startups in 2017.

By the end of the year, a new crop of unicorns were born, while others increased their already billion-dollar valuations.

From companies harnessing the plant microbiome to buzzy biotechs working on cutting-edge technology, here are the unicorns to keep an eye on in 2018, ranked by valuation.

Unless otherwise noted, valuations are according to PitchBook.