Dr. Mary Wingfield:

I am referring to the definition in the heads of the Bill, in which "embryo" is defined as following fertilisation up until the first 56 days of its life. There is a distinction between an embryo before it is implanted in the woman's uterus and the embryo after implantation. Once the embryo has implanted, then the woman is pregnant and the law and the situation are very different from those of a pre-implantation embryo, which is the type of embryo we work with in assisted reproduction units. It is a case of making that distinction.