A circular diagram that represents the closed system of distribution of the CSA's. The diagram is divided into six sections each representing a different component of the system.

The first section is labeled "Research" the second section is titled "Importer" the third section is labeled "Analytical Laboratory" the fourth section is numbered "Manufacturer" and the fifth section is named "Exporter".

Each section is represented by a different color. The red section represents the researcher the blue section represents pharmacy the green section represents canine handler the yellow section represents hospital the orange section represents teaching institution the middle-level practitioner the pink section represents practitioner and the purple section represents narcotic treatment program. The chart also includes the number of DEA registrants in each section as of 10/15/2013.

• Illustration

• Regulatory