Figure 2

Quantitative analyses of changes in T1 and T2* upon carbogen gas challenge, as compared with medical air, in A549 lung adenocarcinoma cell grafts and in MC-38 colon carcinoma cell grafts, respectively. In A549 lung adenocarcinoma cell grafts, T2* values increased by 37% upon carbogen exposure (pā<ā0.004, Wilcoxon test) while MC-38 colon carcinoma cell grafts displayed no consistent trends in T1 and T2*.