Myelosuppression - a decrease in the production of blood cells, which may lead to low blood count. Pancytopenia - a lowering of all three types of blood cells; red blood cells, platelets, and white blood cells, which may lead to low red blood cell count, low blood platlet count, and/or low white blood cell count.
Helium is used as a cooling medium for the Large Hadron Collider (LHC), and the superconducting magnets in MRI scanners and NMR spectrometers. It is also used to keep satellite instruments cool and was used to cool the liquid oxygen and hydrogen that powered the Apollo space vehicles.
Uses of Helium. 1  The total amount of helium used in the United States grew from about 1.4 billion scf (36 million scm) in 1985 to about 2.6 billion scf (69 million scm) in 1996 and is expected to continue to grow in the foreseeable future (Figure 1.1 showed the trend in helium production and sales from 1960 to 1997).