{HEAD ~ A transplant} for implanting into {TAIL ~ a host organism}, comprising cells encapsulated by a matrix, the matrix comprising: 
{ HEAD ~ A transplant } for implanting into { TAIL ~ a host organism } , comprising cells encapsulated by a matrix , the matrix comprising :
HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH