The biochip 2 wherein the light blocking agent is iron oxide and wherein {HEAD ~ the cross} linking {TAIL ~ agent} is avidin or streptavidin 
linking
The biochip 2 wherein the light blocking agent is iron oxide and wherein { HEAD ~ the cross } linking { TAIL ~ agent } is avidin or streptavidin
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH