A contactless system is described in which multiple execution environments may be coupled to a near field communication controller, wherein each execution environment is configured to communicate with remote readers via the NFC controller using an assigned one of a plurality of communication protocols. The pump has a pump casing, a rotatable drive shaft extending into the casing from the rear side, and an open impeller mounted on the drive shaft, this impeller having radially extending vanes with leading and trailing edges. Th2 cytokines antagonize TGF-\u03b2 inhibiting NK cells to disable the inhibition of the immune system. The shaft is slidably connected to the rotary motor and is slidable relative to the rotary motor when it is driven by the first motor to move. , an improved digestion performance in vitro, an improved activity at a pH in the neutral range, an improved stability at low pH, an are stable against protease-degradation, andor are stable in the presence of pepsin and bile salts.