1 In 1990, Barack Obama was elected as the first black president of the Harvard Law Review. 2  Obama, who graduated from HLS in 1991, would later represent Illinois in the U.S Senate, and in 2008 would become the 44 th President of the United States, and the first African-American president.
Most cancers in the lung are carcinomas-cancers of epithelial cells. The top pair of images shows the normal epithelium of the bronchi. This photomicrograph is greatly enlarged. The next three pairs of images show three successive stages of abnormal changes in the bronchial epithelium commonly found in smokers.
Educating yourself about lung cancer: Procedures: Bronchoscopy with transbronchial biopsy. Bronchoscopy with transbronchial biopsy. Definition. Bronchoscopy with transbronchial biopsy is a procedure in which a bronchoscope is inserted through the nose or mouth to collect several pieces of lung tissue.he sample obtained with a transbronchial biopsy should be normal tissue from the lining of the bronchus and air sacs (alveoli). What Abnormal Results Mean. 1  Bronchial abnormalities, tumors. 2  Endobronchial mass. 3  Adenoma (tumor). 4  Infection such as: 5  Aspergillosis.