Poor Iranians compete to sell their organs - in pictures

'Attention, Attention, Kidney for sale. 30 years old, healthy,' reads one ad, carrying the donor's blood type, AB+, and a mobile number, with a note suggesting the donor is open to negotiate over the price Photograph: Torab Sinapour/Guardian

Pieces of paper posted on a house's door carrying the blood type and phone numbers of would-be kidney sellers Photograph: Torab Sinapour/Guardian

Some would-be sellers have typed their information in hope their ads would catch people's attention Photograph: Torab Sinapour/Guardian

A seller has sprayed O+ along a phone number in read on the wall Photograph: Torab Sinapour/Guardian

A seller has written his or her blood type on the tree along with the phone number Photograph: Torab Sinapour/Guardian

Kidney ads on a tree trunk Photograph: Torab Sinapour/Guardian

'Kidney for sale, urgent, A+,' reads the ad which carries the seller's phone number Photograph: Torab Sinapour/Guardian

'Kidney for sale, O+,' reads the ad written on the wall Photograph: Torab Sinapour/Guardian

Kidney ads in the streets of Tehran Photograph: Torab Sinapour/Guardian

Competition means that some kidney ads have been torn down Photograph: Torab Sinapour/Guardian

'24 years old, A+,' reads one add, carrying the seller's phone number Photograph: Torab Sinapour/Guardian

'Kidney, O+,' reads the add carrying the would-be seller's phone number posted on a private property Photograph: Torab Sinapour/Guardian