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Abstract

Introduction: The corrosion casting technique by using resin is usual technique to demonstrate luminal patterns of bronchus, blood vessels, etc… in life science. A corrosion cast of a lung can give a detailed study of the bronchial patterns. Corrosion cast is done using various resin solutions. The aim of the present work is to study the bronchial tree pattern of a goat lung using corrosion casting method. Materials and Methods: Deflated lungs along with intact trachea of a goat were collected from the slaughterhouse. Commercially available rubber silicone has been injected into the lungs through the trachea so that the bronchial patterns can be easily appreciable. After complete filling, the specimen is kept undisturbed for the next 24–48 h. The tissue surrounding the cast is alone removed away and washed with plain water to remove the bloodstains. Results: After dissecting out the tissues using forceps, the cast was washed in plain water. According to the observation of the specimen, it is found that the trachea is branched into the right and left primary bronchi. The secondary bronchi are further branched to form the tertiary bronchi which resemble like fine bristles. In the right lung, it is observed that before the branching of primary bronchus from the trachea, it is known as the apical bronchus supplying the apical lobe of the right lung. Conclusion: Demonstration of bronchial pattern with its various branches is not easy without a corrosion casting preparation. This study can be a valuable teaching aid and museum specimen.

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	JPR Solutions

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