SORIN LUCIAN BOLINTINEANU, DANIELA ANCA PUSCASIU, CODRUTA ILEANA PETRESCU, ROMULUS FABIAN TATU, ELENA POP, CARMEN SOFICA TATU, ALINA MARIA SISU INJECTED AND COLOURING SUBSTANCES LARGELY USED IN PROCESSING MICROSCOPIC ANATOMICAL STRUCTURES There are many fixing and colouring substances largely used in the anatomy laboratories, for teaching purpose. We have injected 22 adult human hearts, removed from the cadavers belonging to the Anatomy and Embryology Department. On 6 specimens we have followed the embryologic myocardium structures for micro angio architecture studies. We used histological techniques like: haematoxylin-eosin, Van Gieson, and Masson‘s Trichrome methods. Also we have removed and dissected 14 kidneys and 16 anatomical structures of the peripheral nervous system: coeliac ganglia, aortico renal ganglia and mesenteric ganglia. The least were analyzed using specific techniques of the nervous system: Nissl method and Bielschowsky silver stain method. 8 foetuses (aged between 4 and 8 months of gestation) were dissected and also analysed. Our results were in according to the literature studies.