Figure 4.
Concentration of 99mTc-HSA vs distance from tumour centre in tumours without necrotic regions (A-07 and R-18). 99mTc-HSA was administered intravenously to tumour-bearing mice. The mice were killed and the tumours were frozen in liquid nitrogen 1−180 min after the administration of 99mTc-HSA. Tumour size was normalised, that is, tumour radius was assigned a value of 1.0. The concentration of 99mTc-HSA was also normalised, that is, the mean concentration of 99mTc-HSA in each tumour section was assigned a value of 1.0. One section was analysed for each tumour. Points represent mean values of 11 (A-07) or 7 (R-18) tumours. Bars represent s.e.m.