 NuCana NASDAQ:NCNA and Athersys NASDAQ:ATHX are both small-cap medical companies, but which is the superior investment? We will compare the two businesses based on the strength of their dividends, profitability, analyst recommendations, institutional ownership, earnings, valuation and risk. Earnings Valuation This table compares NuCana and Athersys gross revenue, earnings per share and valuation. Gross ... 