An exhibition of artist Mark Rothko's late works opens on Thursday at the Tate Modern, in London.
Rothko painted the 15 murals included in the display as part of a �19,000 commission for the Four Seasons restaurant in New York's Seagram building.
The BBC's Razia Iqbal spoke to the artist's son, Christopher Rothko, about the murals.
One-Minute World News 
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