Blood decay and liver uptake of ⁵¹Cr vesicles after preinjection of 2 mg poly-I in comparison to controls (2 experiments). Left, blood decay after preinjection of poly-I (▵) in comparison with controls (○). Right, liver uptake after preinjection of poly-I (▴) compared to controls (⬡). ^*Significantly different (0.01 < P < .05) from controls. ^**Significantly different (P < .01) from controls.