In {TAIL ~ a preferred embodiment}, {HEAD ~ the thermal regulator} is adapted to provide both heating and heat exchanging 
In
In { TAIL ~ a preferred embodiment } , { HEAD ~ the thermal regulator } is adapted to provide both heating and heat exchanging
REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH