Is a foetus a person? The case of Adriana Smith, a brain-dead American woman whose body is being kept alive to carry her child to term, has sparked furious debate about personhood and autonomy.
Brain-dead mum kept alive to save baby
The road to birth: An embryo becomes a foetus at the end of the eighth week of pregnancy. Glossary
Abortion - The deliberate ending of a pregnancy.
Foetuses - Unborn humans or animals in the later stages of their development, but before birth.
Embryos - An unborn or unhatched offspring in the process of development.
Caesarean section - An operation to cut into a woman's womb and deliver her baby.
Dystopian - Relating to an imagined society where there is great suffering or injustice.
Metaphysical - Relating to the branch of philosophy that deals with abstract concepts such as being, knowing, identity and space.
Mary Anne Warren - An American writer and philosopher (1946 - 2010), known for her writings on abortion and animal rights.
Feminist - Someone who calls for women's rights and equality of the sexes.
Gloria Steinem - An American journalist and activist who is recognised as a leader of 1960s and 1970s second-wave feminism in the US.
Sacrament - A religious symbol of sacred significance.