b) allowing {HEAD ~ sufficient time} for {TAIL ~ the dye conjugate} to form a complex with the complementary member, said complex exhibiting a detectable optical response; and 
for
b ) allowing { HEAD ~ sufficient time } for { TAIL ~ the dye conjugate } to form a complex with the complementary member , said complex exhibiting a detectable optical response ; and
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH