{HEAD ~ Antibody/antigen complex} may then be amplified to {TAIL ~ an appropriate level}, and a second step antibody is brought into contact with the antibody/antigen complex to render the complex macroscopically detectable 
amplified to
{ HEAD ~ Antibody / antigen complex } may then be amplified to { TAIL ~ an appropriate level } , and a second step antibody is brought into contact with the antibody / antigen complex to render the complex macroscopically detectable
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL 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 OTH OTH OTH OTH