Deals of the day-Mergers and acquisitions
(Adds Aetna, Humana, Kyrgyzaltyn, London Stock Exchange, Liberty House, British Land)
July 7 (Reuters) - The following bids, mergers, acquisitions and disposals were reported by 2000 GMT on Thursday:
** The U.S. Department of Justice has significant concerns about Aetna Inc's proposed acquisition of health insurer Humana Inc, a source familiar with the situation said, and shares of Humana fell more than 11 percent.
** Kyrgyzstan's state gold company Kyrgyzaltyn has voted against a planned $1.1 billion takeover of Thompson Creek Metals TCM.TO by Canadian miner Centerra Gold.
** London Stock Exchange Group said that U.S. and Russian authorities had approved its $27 billion merger with Deutsche Boerse, giving it the first set of regulatory clearances needed to create a European exchange giant.