Figure 1.

Intratumor mTHPC distributions relative to the capillary wall (r=5.5 μm) prior to the onset of PDT at (a) 3 h, (b) 6 h, (c) 24 h, and (d) 96 h following i.v. injection (see Ref. 6). The initial volume averaged mTHPC concentrations corresponding to the 3, 6, 24 and 96 h drug-light intervals are 0.3, 0.42, 0.54 and 0.18 μg ml⁻¹, respectively (see Refs. ⁴, ⁵, ¹⁶).