An Efficient T₁ Contrast Agent for Labeling and Tracking Human Embryonic Stem Cells on MRI

Table 2

Subcellular distribution of MnEtP.

Fraction	Labeling condition	% Mn
Cytosol	Control	BDL
	10 μM, 24 h	1.2
	40 μM, 30 min	5.0
Nuclear	Control	BDL
	10 μM, 24 h	0.6
	40 μM, 30 min	0.6
Membrane	Control	BDL
	10 μM, 24 h	98.2
	40 μM, 30 min	94.5

Results shown are for two optimized labeling conditions. The mass of Mn/fraction is given as a percentage (BDL: below detection limit).