The invention relates to tendon stem cell useful for treating a variety of diseases and conditions, including tendon repair and attachment of tendon to bone. The canister includes a sorbent and a valve. The massively parallel interface structures preferably use one or more substrates to establish connections between one or more integrated circuits on a semiconductor wafer, and one or more test modules. The coating can be etched at surface portions during coating stage to expose the tops of metal bumps.