The invention can be used to construct tests using {HEAD ~ a number} of formats, labeling methods, {TAIL ~ category binding molecules}, and detection methods 
The invention can be used to construct tests using { HEAD ~ a number } of formats , labeling methods , { TAIL ~ category binding molecules } , and detection methods
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH