Table I.

Results of the cell viability MTT assay.

	12 h		24 h		48 h
Group	Labeled	Unlabeled	Labeled	Unlabeled	Labeled	Unlabeled
1	0.293	0.256	0.516	0.491	0.458	0.606
2	0.370	0.408	0.591	0.546	0.286	0.246
3	0.389	0.353	0.631	0.609	0.392	0.439
4	0.362	0.388	0.440	0.516	0.374	0.347
5	0.295	0.353	0.561	0.559	0.348	0.380
6	0.381	0.349	0.622	0.588	0.293	0.433
7	0.257	0.262	0.437	0.515	0.286	0.249