RT Journal Article SR Electronic T1 Buying human kidneys: autonomy, commodity and power. JF Journal of Medical Ethics JO J Med Ethics FD BMJ Publishing Group Ltd and Institute of Medical Ethics SP 99 OP 99 DO 10.1136/jme.17.2.99 VO 17 IS 2 A1 B Brecher YR 1991 UL http://jme.bmj.com/content/17/2/99.abstract AB Buttle's reply to my objections to buying kidneys is helpful but unconvincing in two respects. Doing something freely leaves quite open the possibility that one is thereby making a commodity of a person; and the effects of institutionalising such a practice is itself a matter for concern. And while his emphasis on 'power' is important, the concept is hardly less problematic than 'commodification'.