Table 1.

Ba/F3 cells incubated in 2 mM gadolinium compared to nontreated cells

	2 mM gadolinium + protamine sulfate	2 mM gadolinium − protamine sulfate	Control + protamine sulfate	Control − protamine sulfate
24 hours of incubation	72% ± 5%	73% ± 7%	77% ± 5%	75% ± 6%
48 hours of incubation	70% ± 7%	72% ± 11%	81% ± 6%	70% ± 4%
72 hours of incubation	73% ± 3%	68% ± 5%	83% ± 7%	75% ± 7%

Notes: Cells were also exposed or not exposed to transfection agent protamine sulfate. Figures in the table show percentages of viable cells.