Radioactive iodine uptake testing is a useful diagnostic tool for assessing thyroid pathologies. The atom is the smallest unit of an element. An atom consists of electrons, protons and neutrons. Electrons revolve around the nucleus (made of protons and neutrons) in fixed orbits. The number of electrons equals number of protons in a neutral atom.
WHATâS NEW: 1  The Buffalo Bill Museum has been named one of the 25 best things to do in Iowa by VacationIdea Dream Vacation Magazine. 2  The Buffalo Bill Museum and LeClaire, Iowa are listed on the National Geographic website that helps people explore the Mississippi River.
A Legend is Born. William F. âBuffalo Billâ Cody was born just west of the Mississippi River near LeClaire, Iowa, on February 26, 1846. At age 12, he worked for a wagon train headed to Fort Laramie, Wyoming; the next year, he participated in the gold rush to Colorado; and at 15, he reportedly rode for the Pony Express.