Lymphomas differ in track length and displacement of their PD1-positive T cells. (a) Track length (color code according to velocity in µm/s) and absolute displacement (black) of an example of a PD1-positive T cell in mantle cell lymphoma. (b) Track length (color code according to velocity in µm/s) and absolute displacement (black) of an example of a PD1-positive T cell in NLPHL. (c) Absolute displacement of PD1-positive T cells in different lymphomas (* p < 0.05, one-way ANOVA with Bonferroni’s post-test for multiple comparisons). Each dot represents the mean from one movie. Lymphadenitis: 5 cases, AITL, NLPHL and MCL: one case, MGZL, DLBCL and FL: two cases, cHL: three cases. (d) Accumulated track length of PD1-positive T cells in different lymphomas (* p < 0.05, one-way ANOVA with Bonferroni´s post-test for multiple comparisons). Each dot represents the mean from one movie. Lymphadenitis: 5 cases, AITL, NLPHL and MCL: one case, MGZL, DLBCL and FL: two cases, cHL: three cases.