IRS1 and {TAIL ~ IRS2} are part of {HEAD ~ the insulin} or insulin like growth factor signaling pathway 
IRS1 and { TAIL ~ IRS2 } are part of { HEAD ~ the insulin } or insulin like growth factor signaling pathway
OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH