A method of detecting {HEAD ~ a complementary member} of a specific binding pair in {TAIL ~ a sample}, comprising: 
A method of detecting { HEAD ~ a complementary member } of a specific binding pair in { TAIL ~ a sample } , comprising :
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH