Illinois officials have begun setting up a system to let people buy medical marijuana in the state.
At least four state agencies are meeting to draft rules that will govern medical marijuana distribution.
They hope to present a final version of the rules to lawmakers in the spring.
In August, Illinois became the 20th state to legalize medical marijuana. The law sets up a four-year pilot program for state-regulated dispensaries and 22 so-called cultivation centers, where the plants will be grown.
Only patients with serious illnesses or diseases will be allowed to get the drug. They must have established relationships with a doctor and will be limited to 2.5 ounces every two weeks.