Further, in these embodiments, the agent cartridge can include {HEAD ~ a cavity} configured to house {TAIL ~ a medical agent} therein 
configured to house
Further , in these embodiments , the agent cartridge can include { HEAD ~ a cavity } configured to house { TAIL ~ a medical agent } therein
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH