Figure 1.

Cell survival curves for the whole tumour cell fraction in the total tumour cell population of EL4 tumours as a function of (a) γ-ray, (b) accelerated carbon ion beam or (c) reactor neutron beam radiation dose. Circles, triangles and squares represent the surviving fractions immediately after high dose rate (HDR) and at 24 h after (delayed) HDR and reduced dose-rate (RDR) γ-ray or accelerated carbon ion beam irradiation, respectively. For reactor neutron beam irradiation, circles, triangles and squares represent the surviving fractions for without a ¹⁰B-carrier [boron (–)], with boronophenylalanine-¹⁰B (BPA) and with sodium mercaptoundecahydrododecaborate-¹⁰B (BSH), respectively. Bars represent standard errors (n=9).