The intestinal tracts from seven different species of tunicates, some solitary, some colonial, were studied fine-structurally by freeze-fracture. These urochordates occupy an intermediate position phylogenetically between the vertebrates and the invertebrates. The various regions of their gut were isolated for examination and the junctional characteristics of each part investigated. All the spe...

children and adolescents are vulnerable to violent situations in their social, family and school environment. the aim of the study was to characterize morbidity due to violence in brazilian children and adolescents.a cross-sectional study through the analysis of 1,356 corpus delicti medical reports and police reports of children and adolescents aged 0-19 years, victims of interpersonal violence...

We report an uncommon and potentially dangerous complication of continuous positive airway pressure (CPAP) applied during spontaneous respiration. A patient with multiple fractures and recurrernt atelectasis developed pneumocephalus on the seventh day of respiratory therapy with CPAP via a face mask. A fracture of the base of the skull, not recognized despite neurologic and radiologic evaluatio...

A 55-year-old male presented with back pain and slightly tender annular plaques with central ulceration on his face. A skin biopsy revealed scattered yeast with broad based buds. A CT scan of the abdomen revealed a pathologic T12 fracture. Tissue obtained from the spine confirmed budding yeasts. The patient was diagnosed with disseminated blastomycosis. The patient was treated with amphotericin...

Blunt trauma causing facial nerve palsy and facial nerve trauma due to seat belt injury is rarely reported. We describe a 63 year old female who was involved in a road traffic accident without any imaging evidence of temporal bone fracture developing left facial nerve palsy on the second day. We discuss the pathophysiology of this condition and the need to be aware of this unusual complication ...

In primate goblet cells, the membranes of adjacent mucous granules from contact areas which appear as extensive pentalaminar fusion sites in thin sections. In freeze-fracture replicas, the same membrane areas are smooth, except for a few 6-8-nm particles which adhere to the E face. These protein-poor membrane interaction sites are relatively long-lived, and it is proposed that further stimulus ...

By means of the freeze-fracture technique, the membrane specialization of the cochlear hair cell of guinea pigs was studied. Periodically aggregated particles were revealed on the PF face of the plasma membrane of the outer hair cell. The particles were around 12 nm in diameter and 10 to 17 nm in center-to-center spacing. Their arragement was hexagonal, orthogonal or parallel. Possible involvem...

Mining fracture is the key factor in realizing water-conservation mining, stability evaluation of coal mining subsidence areas, and accurate restoration surface eco-environment. To clarify, evolution distribution fractures, based on strata theory degree overburden failure, contact state rock stratum after critical failure was analyzed, formation mechanism “saddle shaped” water conducting zone r...

B.M. Gallup, B.H. Hallgrimsson, C.E. Cotton, T .A. Smith, J.A. Newman Biokinetics and Associates Ltd. Ott awa, Canada DJ. Dalmotas Transport Canada Ott awa, Canada As part of Transport Canada's on-going occupant injury protection program, a frangible faceform has been developed to monitor for facial bone fracture in motor vehicle testing. This paper details the history of the work associated wi...