An act to amend Sections 27 and 101 of, to add Section 205.1 to, and to add Chapter 3.5 (commencing with Section 19300) to Division 8 of, the Business and Professions Code, to amend Section 9147.7 of the Government Code, to amend Section 11362.775 of the Health and Safety Code, to add Section 147.5 to the Labor Code, and to add Section 31020 to the Revenue and Taxation Code, relating to medical marijuana.