Other uses
Collagenases may be used for tenderizing meat in a manner similar to widely used tenderizers papain, bromelain and ficain. See also
Matrix metalloproteinase
Gas gangrene

References
External links
Collagenases at the US National Library of Medicine Medical Subject Headings (MeSH)
Pneumothorax ex vacuo is a rare type of pneumothorax which forms adjacent to an atelectatic lobe. It is seen preferentially with atelectasis of the right upper lobe and is the result of rapid atelectasis producing an abrupt decrease in the intrapleural pressure with subsequent release of nitrogen from pleural capillaries. Treatment
Treatment consists of bronchoscopy rather than chest tube drainage. Radiographically, pneumothorax ex vacuo is suggested when an atelectatic lobe or lung, particularly right upper lobe atelectasis, is surrounded by a focal pneumothorax. Related illness
"Trapped lung" presents in the same way as pneumothorax ex vacuo and can occur in patients with visceral pleural thickening and following drainage of an effusion. == References ==