This is a photomicrograph of cells taken from a red, raised nodule on the top of a dog’s head. There is a basophilic background and several greyish looking cells that are red blood cells. A single neutrophil is located in the left hand side. Just to the right of the neutrophil is the nuclear remnants of a cell that popped, probably from too much pressure when I made the slide. The round purple cells are histiocytes which are a type of dendritic cell, that makes this mass a histiocytoma which is a benign type of tumor that usually goes away on its own.