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:
History of nucleic acids. 1  Nuclein were discovered by Friedrich Miescher in 1869. 2  In 1889 Richard Altmann discovered that nuclein has acidic properties, and it became called nucleic acid. 3  In 1938 Astbury and Bell published the first X-ray diffraction pattern of DNA. 4  In 1953 Watson and Crick determined the structure of DNA.