FIG 2 illustrates {TAIL ~ the biochemical steps} involved with the conversion of TCE to {HEAD ~ carbon dioxide} 
FIG 2 illustrates { TAIL ~ the biochemical steps } involved with the conversion of TCE to { HEAD ~ carbon dioxide }
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD