Fig. 4

Consecutive sections of paraffin-embedded NCI-H69 tumor xenografts from mice, tumors resected 4 h post-injection with either 3 µg 800CW-TATE (top) or 3 mg DOTA-TATE (as a blocking agent from SSTR₂) and 3 µg 800CW-TATE (bottom). From left to right are depicted H&E staining, fluorescent cell death staining (TUNEL), NIR-fluorescent signal from 800CW-TATE uptake, and a merging of dead cell staining and NIR-fluorescence