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.
pneumothorax. entry of air into the pleural cavity in sufficient quantity to cause collapse of the lung and consequent respiratory embarrassment. If it is unilateral there is a mediastinal shift with displacement of the heart to the other side of the chest. Breath sounds are absent from the affected side. Pneumothorax.
What Causes a Collapsed Lung. A pneumothorax means air (pneumo) in the chest (thorax). This happens when air leaks into the space between your lungs and your inner chest wall. Normally this area is what we call a âpotential spaceâ because the lungs touch the chest wall.