For all basic and pre-clinical AR-GE studies, various human or animal organ, tissue and mesenchymal stem cells, neural stem cells, cancer stem cells, various cancer cell lines, healthy tissue cells, markers using immunofluorescence and immunohistochemical methods, preferably with monoclonal antibodies, and hematoxylin. Histopathological staining such as Eozin, Oil Red O, Von Kossa and Alizarin Red is performed in this unit.