Member States shall bring into force the laws, regulations and administrative provisions necessary to comply with this Directive not later than 7 April 2006. They shall forthwith inform the Commission thereof.

When Member States adopt these measures they shall contain a reference to this Directive or shall be accompanied by such reference on the occasion of their official publication. The methods of making such reference shall be laid down by the Member States.

Member States may decide for one year after the date laid down in the first subparagraph of paragraph 1 not to apply the requirements of this Directive to tissue establishments bound by national provisions before the entry into force of this Directive.

Member States shall communicate to the Commission the texts of the provisions of national law that they have already adopted or which they adopt in the field governed by this Directive.