FIGURE 2. Scintigrams show anterior views of legs and lower abdomen of rabbit at 0 min (baseline), 30 min, 60 min, and 24 h after subcutaneous injection of ^99mTc-labeled blue-biotin-liposomes in both hind feet; this was followed by subcutaneous injection of avidin in only left hind foot. Increased retention of ^99mTc activity in left popliteal node compared with right popliteal node is easily visualized at 60 min and 24 h.

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