Figure 2

TUNEL stained section of spleen from a cat with FIP. A Section from spleen of a cat with FIP containing three periarteriolar lymphoid sheaths, ×40 magnification. B Strongly TUNEL positive cells are seen in varying proportions in the central B cell zones of lymphoid follicles (arrows) and among sparse lymphocyte appearing cells scattered among the sinusoids and greenish stained marginal zones. Staining was mainly within nuclei and not cytoplasmic, ×40 magnification.