title: Prolonging life. 3. The hope in experiment.
mesh_terms: D000029:Abortion, Legal; D000368:Aged; D002675:Child, Preschool; D004944:Esophagoplasty; D005065:Euthanasia; D005260:Female; D006805:Human Experimentation; D006801:Humans; D007878:Legislation as Topic; D008297:Male; D011247:Pregnancy; D006113:United Kingdom