The genome of the organism that produces the world's most lethal toxin has been revealed. This toxin is the major weapon in the genome of Clostridium botulinum: less than two kg is enough to kill every person on the planet.
Tension pneumothorax: The most serious type of pneumothorax, this occurs when the pressure in the pleural space is greater than the atmospheric pressure, either because air becomes trapped in the pleural space or because the entering air is from a positive-pressure mechanical ventilator.
The condition can make breathing extremely painful. Sometimes it is associated with another condition called pleural effusion, in which excess fluid fills the area between the membrane's layers. The double-layered pleura protects and lubricates the surface of the lungs as they inflate and deflate within the rib cage.eople with asthma may also have asthmatic bronchitis,... In some cases of pleurisy, excess fluid seeps into the pleural space, resulting in pleural effusion. This fluid buildup usually has a lubricating effect, relieving the pain associated with pleurisy as it reduces friction between the membrane's layers.