Methanotrophic microorganisms 21 are generally defined as those microorganisms which can derive energy from {HEAD ~ the utilization} of {TAIL ~ methane} 19, specifically by oxidation 
Methanotrophic microorganisms 21 are generally defined as those microorganisms which can derive energy from { HEAD ~ the utilization } of { TAIL ~ methane } 19 , specifically by oxidation
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH