Mich. Comp. Laws § 333.26424a

Sec. 4a. (1) This section does not apply unless the medical marihuana facilities licensing act is enacted. (2) A registered qualifying patient or registered primary caregiver shall not be subject to arrest, prosecution, or penalty in any manner, or denied any right or privilege, including, but not limited to, civil penalty or disciplinary action by a business or occupational or professional licensing board or bureau, for any of the following: (a) Transferring or purchasing marihuana in an amount authorized by this act from a provisioning center licensed under the medical marihuana facilities licensing act. (b) Transferring or selling marihuana seeds or seedlings to a grower licensed under the medical marihuana facilities licensing act. (c) Transferring marihuana for testing to and from a safety compliance facility licensed under the medical marihuana facilities licensing act.