Table 1.

Correlation coefficients between image feature dissimilarity and chemical structure similarity. Results are shown for each of four image features (total intensity, spectral distribution, CV and cytoplasmic-to-nuclear ratio). Statistical significance of the correlations is shown in parenthesis.

	Same pyridinium or quinolinium	Different pyridinium or quinolinium
Total Intensity	-0.05(<0.01)	-0.10(<0.01)
Spectral distribution	-0.06(<0.01)	-0.14(<0.01)
CV	-0.07(<0.01)	0.00(0.50)
cyto/nuc ratio	-0.04(<0.01)	-0.01(<0.01)