Figure 1.

Plasma clearance and organ distribution of ¹²⁵I-hemoglobin. A: ¹²⁵I-hemoglobin was injected intravenously through the tail vein of mice as described in Materials and Methods. The radioactivity of blood samples obtained after 45 seconds was in the range of 88,300 to 122,300 cpm/ml. Three mice of each genotype were used and the average (± SD) at each data point is indicated. B: Mice were sacrificed 20 minutes after ¹²⁵I-hemoglobin injection and total radioactivity of various organs was counted as described in Materials and Methods. Three mice of each genotype were analyzed. Data represent mean ± SD.