The following commentary comes from an independent investor or market observer as part of TheStreet's guest contributor program, which is separate from the company's news coverage.NEW YORK ( InvestorPlace) -- Some of the hottest penny stocks to buy now are in the biotech sector. Start-ups and early-phase biotechnology companies can provide explosive profit potential for investors who are in on the ground floor of a game-changing medical technology or blockbuster drug.
4 Biotech Penny Stocks to Buy: Navellier
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