This atlas provides an accurate and detailed depiction of all brain structures at fetal stage E17.5, Day of birth, and Day 6 postnatal. In addition to brain structures, the atlas delineates peripheral nerves, ganglia, arteries, veins, muscles bones, and other organs. It is an indispensable guide for the interpretation of nervous system changes in gene knockout and transgenic mice. The authors are recognized leaders in brain cartography, and the delineations and graphics link the atlas with other highly successful Paxinos atlases, complementing the catalog of brain atlases of highest quality available from Elsevier. There is currently no alternative of similar quality and extent on the market. It includes 43 photographs and drawings of Nissl-stained coronal sections of the brain of a fetal mouse at E17.5 days; 65 photographs and drawings of Nissl-stained coronal sections of the brain of a mouse on the day of birth; 73 photographs and drawings of Nissl-stained coronal sections of the brain of a mouse aged 6 days postnatal. The drawings are based on the study of sections stained with Nissl and a range of neuroactive substances. The accompanying CD includes all drawings in pdf and eps formats, and electronic files of photographs of the Nissl stained sections.