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