Mumbai, Sept. 18 -- The Indian rupee gave back some of its previous day gains but continues to stay strengthened under Rs 88 per dollar mark in opening trades on Thursday. Dollar recovery following a widely expected 25 bps rate cut by Fed with a cautious outlook is seen weighing on the local unit. INR opened at Rs 87.93 per dollar and fell to a low of 88.01 so far during the day. Yesterday, rupee appreciated 25 paise to close at 87.84 against US dollar on Wednesday, near a 3 and half week high, tracking a positive trend in domestic equities and supported by optimism over US-India trade negotiations. Indian shares ended higher for a second consecutive session on Wednesday after India and the U.S. agreed to speed up talks on a bilateral tra...