{HEAD ~ The methanotrophic microorganisms} 21 can cometabilize {TAIL ~ short chain chlorinated hydrocarbons}, such as chlorinated alkenes 
{ HEAD ~ The methanotrophic microorganisms } 21 can cometabilize { TAIL ~ short chain chlorinated hydrocarbons } , such as chlorinated alkenes
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH