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Oral Medicine
Albuterol is a beta2-adrenergic agonist that relaxes bronchial smooth muscles, while ipratropium is a muscarinic antagonist that blocks the parasympathetic effects on the airways, leading to bronchodilation.
Oral Pathology
Koebner's phenomenon refers to the development of skin lesions at the site of trauma in individuals with certain skin conditions. It is most commonly associated with psoriasis, where new psoriatic plaques can form following skin injury or trauma.
Radiology
Overfixing occurs when the radiographic film remains in the fixing solution for an extended period, leading to excessive clearing of the image. Fixing agents, such as sodium thiosulfate, dissolve unexposed silver halide crystals. Prolonged exposure