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The lira firmed to 2.2470 against the dollar by 1440 GMT from 2.2670 late on Thursday. It was its firmest level since Sept. 25.
The main share index closed up 1.28 percent to 75,533, outperforming the broader emerging markets index , which was up 0.61 percent.
The 10-year benchmark bond yield inched down to 9.08 percent from Thursday's 9.11 percent.