Also referred to as pleural effusion or ' fluid on lungs ', the condition is commonly diagnosed among TB patients. Normally, there is a small amount of fluid surrounding the lungs but in TB there is bacterial growth in the fluid filled space between the chest wall and the lungs.
Following are the equations of several nuclear reactions that have important roles in the history of nuclear chemistry: 1  The first naturally occurring unstable element that was isolated, polonium, was discovered by the Polish scientist Marie Curie and her husband Pierre in 1898. It decays, emitting Î± particles:
Chromatin was first discovered by Walther Flemming by using aniline dyes to stain it. In 1974, it was first proposed by Roger Kornberg that chromatin was based on a repeating unit of a histone octamer and around 200 base pairs of DNA. The solenoid model was first proposed by John Finch and Aaron Klug in 1976.