The legal deadlines (Law 21/2000) they can condition the effective cancellation of data of the HC of the applicant. The right to know the biological origins themselves, (LDOIA), it entails the conservation of the information about the donation of embryos of the HC of the affected one, information that has to remain at the disposal of its children. Nothing prevents from the center limiting other accesses to the information, or the affected one exercising, if he considers it 6.4 LOPD and articles 34 and 35 RLOPD, its law of opposition to the treatment of the data, convenient including any cession or access (without harm of the law of access of the children), in the terms of the article.