Fig. 3From: Fractionated carbon ion irradiations of the rat spinal cord: comparison of the relative biological effectiveness with predictions of the local effect modelDose-response curves after 6 Fx of carbon ions measured at different SOBP-depths (a–f) together with the previously published photon curve [10]. Error bars indicate 1 SE of TD50. Error bars with caps are based on the fit while those without were estimated (see text)Back to article page