The rupee slipped 18 Paise to 64.81 against the US dollar in late morning trade today. yesterday, the rupee had recovered some of the lost ground and advanced by 6 paise to end at 64.50 against the US dollar amid mild selling of the American currency by exporters.The benchmark BSE Sensex rose by 50.47 points in the opening trade but lost initial gains and is now trading 173 points down at 29, 616. Similarly the NIFTY is also trading in red zone 53 points down at 9,184.