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