The computer system is used to calculate probabilities for determining {HEAD ~ unknown bases} by analyzing {TAIL ~ the fluorescence intensities} of hybridized nucleic acid probes on biological chips 
by analyzing
The computer system is used to calculate probabilities for determining { HEAD ~ unknown bases } by analyzing { TAIL ~ the fluorescence intensities } of hybridized nucleic acid probes on biological chips
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH