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.
Diamond prospectors and land mine clearing operations have already had some success using helium blimps for this type of sensing. Because hot air is much cheaper to use than helium (Our aircraft cost about one tenth as much to build and operate as a standard helium blimp.) we can meet these needs very profitably as well as entering more traditional blimp venues such as advertising.