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.
This happens to be the largest organ in a patientâs body. Many epithelia also contain specialized cells that secrete substances into the ducts or cavities they line. Benign tumors of epithelial origin are termed adenoma, papilloma, or epithelioma. Malignant tumors of epithelial origin are termed carcinoma and adenocarcinoma if they form glands or ducts.