Avalon GloboCare Corp. (NASDAQ: $AVCO ) is making progress and gaining recognition in the biotechnology and healthcare industries. The stock exhibits massive growth potential, and as of May 6, post its patent filings, the stock has gained 11.24% in just 5 days, making it one of the best penny stocks to buy in May. https://finance.yahoo.com/news/10-penny-stock...01107.html