The following terms whenever used or referred to in this act shall have the following respective meanings, unless a different meaning clearly appears from the context.

     The term "commission" as hereinafter used shall mean medical center commission.

     The term "district" shall mean medical center district.

     "Governmental institutions" shall mean hospitals, clinics, medical schools, medical research institutes, and related institutions which are governmentally owned and operated.

     "Private institutions" shall mean hospitals, clinics, medical schools, medical research institutes, and related institutions which are privately owned and operated and are not for profit.