a) providing a test cell which overproduces {HEAD ~ IRS2} and exhibits an increase in binding of an IRS2 binding protein to IRS2, relative to {TAIL ~ a control cell} which produces IRS2 at a lower level, or does not produce the protein at all, and which exhibits a lesser amount of binding of said protein to IRS2 
a ) providing a test cell which overproduces { HEAD ~ IRS2 } and exhibits an increase in binding of an IRS2 binding protein to IRS2 , relative to { TAIL ~ a control cell } which produces IRS2 at a lower level , or does not produce the protein at all , and which exhibits a lesser amount of binding of said protein to IRS2
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 OTH OTH OTH OTH OTH OTH OTH OTH