The Convention on Human Rights and Biomedicine (the Oviedo Convention) sets out two principles concerning embryos (Articles 14 and 18). It forbids the use of techniques of medically assisted procreation for the purpose of choosing a future child's sex (except where serious hereditary sex-related disease is to be avoided) and the creation of human embryos for research purposes. It also stipulates that, where the law allows research on embryos, it shall ensure adequate protection of the embryo. Read more.