Del. Code tit. 8, § 618

This title shall be applicable to a corporation organized pursuant to this chapter, except to the extent that any of the provisions of this chapter are interpreted to be in conflict with the provisions of this title, and in such event the provisions and sections of this chapter shall take precedence with respect to a corporation organized pursuant to this chapter. A professional corporation may consolidate or merge only with another professional corporation empowered to render the same specific professional service or any qualified related professional services; and a merger or consolidation with any foreign corporation is prohibited. Sections 501-518 of this title shall be applicable to a professional corporation; but in addition to the information called for on the annual report of all corporations by those provisions, the annual report of a professional corporation may, by its terms, separately require that the professional corporation shall certify that its shareholders, directors and officers listed on such report are duly licensed or otherwise legally authorized to render the same specific professional service, or those component qualified related professional services, as the professional corporation.