Fig. 5. Prox1-positive lymphatic vessels are detected in the vicinity of a spontaneous murine lymphoma obtained from a Ink4d-null mouse. (A, C and E) Prox1-positive cells are observed in the lymphatic vessels around the tumor (arrows) but not in the blood vessels (asterisks). VEGFR-3 (B), SLC (D) and LYVE-1 (F) expression overlaps that of Prox1 in the lymphatic vessels (arrows). Scale bar: 100 µm.