title: The origin of sympathetic preganglionic neurons in the dog.
mesh_terms: D000818:Animals; D001369:Axons / Q000502:physiology; D003584:Cytological Techniques; D004285:Dogs; D007839:Functional Laterality; D005725:Ganglia, Autonomic / Q000166:cytology*; D006735:Horseradish Peroxidase; D009474:Neurons; D013116:Spinal Cord / Q000166:cytology*; D013562:Sympathectomy
chemical_list: D006735:Horseradish Peroxidase