Fellsway Plaza in Medford looks like any other suburban strip mall, with a nail salon, gym and restaurants. But as some people walk back to their cars with freshly painted nails or carrying bags of takeout, others have gauze tape around their arms and some extra money in their pockets.
They just finished selling their blood plasma.
“I’m just trying to pay my bills,” Kenneth Younger from Allston said on his way out of BioLife Plasma Services. “Things are just a little too pricey for a little too long. They’ve been getting worse.”…