September 16 (SeeNews) - Turkey's Is Girisim Sermayesi Yatirim Ortakligi [BIST:ISGSY], or Is Private Equity, said it had sold its its 25.78% stake in dialysis services provider Turkmed Diyaliz ve Bobrek Sagligi Kurumlari A.S. for 500,000 Turkish lira ($251,000/188,000 euro).