In a CLEC, {HEAD ~ the entire volume} of {TAIL ~ the luciferase CLEC} would consist of light emitting enzyme 
of
In a CLEC , { HEAD ~ the entire volume } of { TAIL ~ the luciferase CLEC } would consist of light emitting enzyme
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH