Figure 4. Transport of S961 across the BBB.

Levels of ¹²⁵I‐S961 in whole brain were measured in mice co‐injected with vehicle (n = 7, open circles), 1 μg S961 (n = 5, filled circles) or 10 μg S961 (n = 7, filled squares). Values are expressed as the B/S ratio (μl/g). As slope of the linear regression was not significantly different from zero, the average level of ¹²⁵I‐S961 present in each group was depicted by a straight, dotted or dashed line.