With medical attention, radiation exposure is survivable to 200 rems of acute dose exposure. The two rivers Rems and Murr gave the district its name. This calmed the situation in the Rems Valley temporarily. As of 2018, there are 74 medications subject to REMS monitoring. Onboard Curiosity is a meteorological station called REMS (Rover Environmental Monitoring Station). Monoamines are active during NREMS but not REMS, whereas acetylcholine is more active during REMS. At 5,000 rems, 100% of the group will die within 2 days. Advance elements crossed the Rems River and rushed to the Danube. There is also a REMS program called iPLEDGE for the drug, isotretinoin. The current legal limit exposure in the United States is 1 ALI, or 5 rems.