Here are two stocks with buy rank and strong value characteristics for investors to consider today, May 7th: United Therapeutics (UTHR) : This company, which is engaged in research and development efforts to increase the supply of transplantable organs and tissues through regenerative medicine and organ manufacturing, carries a Zacks Rank #1(Strong Buy), and has witnessed the Zacks Consensus Estimate for its current year earnings increasing 3.2% over the last 60 days. United Therapeutics has a price-to-earn ...