In {HEAD ~ some versions}, {TAIL ~ a medical fluid} may comprise minced tissue fragments suspended in a biocompatible carrier 
In { HEAD ~ some versions } , { TAIL ~ a medical fluid } may comprise minced tissue fragments suspended in a biocompatible carrier
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH