Influence of the ketogenic diet on tumour growth. (A) Shown is the mean tumour volume ± standard deviation as well as the respective regression lines of KD and SD animals. Endpoint for the experiments was attainment of a tumour volume between 600 and 700 mm3. Slopes are significantly different (P = 0.021). R2 (coefficient of determination). (B-C) Shown are tumour volumes for the individual animals of the KD and SD groups for the first 20 days after tumour cell inoculation.