The term lateral part of the anterior olfactory nucleus refers to one of five subdivisions of the anterior olfactory nucleus in the mouse ( Dong-2004 ) and the rat ( Swanson-2004 ); it is located lateral to the anterior part of the anterior commissure. The other four parts are: the external part of the anterior olfactory nucleus, the dorsal part of the anterior olfactory nucleus, the medial part of the anterior olfactory nucleus and the posteroventral part of the anterior olfactory nucleus.