(1) Directly observable from fossils, the ancestral cetacean also had a pachyostotic bulla and elongate molar shear facets.(2) The bullous form of impetigo presents as a large thin-walled bulla containing serous yellow fluid.(3) One venerable conjecture was that it began as a contemptuous reference to papal edicts known as bulls (from the bulla , or seal, appended to the document).(4) The jugular process is enlarged and the tympanic projection is extended anteriorly from the ventral surface of the tympanic bulla .(5) The prootic is a paired bone that forms the anterior lateral face of the auditory bulla .(6) Finding a large, ruptured emphysematous bulla makes resection mandatory.(7) Examination of the surgical specimen revealed a lobe of lung with focal hemorrhage and subpleural bullae .(8) Within three weeks, his toes turned black and serous-filled bullae erupted.(9) On the ventral surface of the cranium, the bullae are small, and the paroccipital processes are long and straight.(10) In the early stages of the disease the alveolar walls appear perfectly normal while in the later stages, fibrosis of the alveolar wall with blebs and bullae is common.(11) Fluid aspirates taken from the bullae revealed gram-positive rods.(12) The bullae are thin-walled and rupture easily, leaving ulcerated skin lesions that heal slowly.(13) The lesions are flaccid vesicles or bullae that are initially localized in oral mucosa and later spread randomly to other parts of the body.(14) u2018The discovery is of considerable archaeological interestu2019, says Pestell. u2018Not only are bullae of this date incredibly rare, so are any sealsu2019.(15) His chest x ray showed bullae but no collapse, although an emergency computed tomogram confirmed a large, right sided pneumothorax.(16) It may change colour sequentially from a red-purple to a dusky blue before progressing to necrosis and formation of bullae and eventually becoming haemorrhagic.