The Spleen In Immunohistological Staining (image) University of Turku Share Print E-Mail Caption This is an image of the spleen whose white blood cell subclasses are shown in different colours in immunohistological staining. The purple cells produce antibodies. Credit University of Turku Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.