Figure 7

In ovarian tumors S1P1 expression was observed near T and B cells. Alternate serial sections of a serous ovarian tumor of the hen showing (A) Bu1a+ cells in the stroma (arrows) and diffuse tissue stain (open arrow), (B) CD4 T cells around tumor glands (arrows), (C) S1P1 expression on the epithelium of tumor glands (arrow) and (D) CD8 T cells (arrows) in the stroma (original magnification 100×).