Light micrograph of clear cell renal cell carcinoma. Clear cell renal cell carcinoma is the most common type of kidney cancer. As seen in this image, this tumour often has areas of haemorrhage (bright red). The tumour cells??cytoplasm is mostly clear (white). The tumour cells??nuclei correspond to the blue dots. Haematoxylin and eosin stained tissue section. Magnification: 200x when printed at 10cm.