The acute and chronic action of the oxidant gases ozone, nitrogen dioxide and oxygen on the morphological appearance of cells of the alveolar and bronchiolar epithelium is reviewed. Type I cells of the alveolar and ciliated cells of the bronchiolar epithelium appear to be sensitive targets for the oxidant gases. The degree of damage is influenced by age, nutritional status and the development o...

Arterial blood gases (ABG) is a common and gold standard procedure often used to assess acid-base status electrolytes. sampling technically difficult painful causes rare but serious complications for the patient (such as vascular injury or embolism). The gas analysis of samples drawn from arteriovenous fistula (AVF) requires fewer punctures relatively safer less patient. study included (22) pat...

an accurate diagnosis of the morphology of the root canal system is a pre-requisite for successful root canal treatment. frequently, root canals are left untreated because the clinicians fail to identify their presence, particularly in teeth that have anatomical variations or additional root canals. in this report a maxillary lateral incisor with two roots has been described.