Feinstruktur des Bulbus olf actorius des Haushuhnes

In order to investigate the fine structure of the chicken's Bulbus olfactorius and to determine differences between birds and mammals, tissue specimen were taken from 26 animals. The following techniques were used: Luxol-Fast-Blue- and Nisslstaining, Bodian impregnation. Marked differences between the Bulbus of chicken and mammals were found lightmicroscopically in the number of the cell layers and the localization and size of cells. The electronmicroscope revealed that the cell organelles and the different types of synapses resembled the ones found in mammals. The mitral cells of the hen contrary to the ones of mammals often contained lamellar bodies.