Competent adults should be allowed to sell a kidney

Ethical issues in medicine and biomedical research: gene editing, reproductive technology, end-of-life care, organ markets, performance enhancement, and dual-use research.

Organ markets, medical hibernation, reversible cryopreservation, and medical assistance in dying.

Body's system responsible for filtering blood, removing waste products and excess substances, regulating fluid and electrolyte balance, maintaining acid-base homeostasis, and producing hormones that influence blood pressure and red blood cell production.