Table I.

Efficiency of siRNA and αCD22 antibody loading onto SPIO nanoparticles

APC
	Absorbance	% Intensity
αCD22 Ab-SPIO pellet	1.20E+06	89.9
supernatant (unbound αCD22 Ab)	1.35E+05	10.1
siRNA-αCD22 Ab-SPIO pellet	6.89E+05	47.1
supernatant (unbound αCD22 Ab)	7.74E+05	52.9
Alexa488
	Absorbance	% Intensity
siRNA-SPIO pellet	6.06E+07	95.3
supernatant (unbound siRNA)	2.96E+06	4.66
siRNA-αCD22 Ab-SPIO pellet	5.58E+07	100
supernatant (unbound siRNA)	1.27E+03	0

APC, allophycocyanin; Alexa488, Alexa Fluor 488; αCD22 Ab, anti-CD22 antibody; SPIO, superparamagnetic iron oxide; siRNA, small interfering RNA.