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.
The epithelium of the terminal bronchioles is composed of three types of cells-ciliated cells, nonciliated cells and a few basal cells.The epithelium of the respiratory bronchioles has three cell populations.The first near the terminal bronchioles consists of the nonciliated columnar, ciliated columnar and basal cells. The second consists of nonciliated cuboidal cells. The third is most similar to the alveolar epithelial lining.These are nonciliated cells, cuboidal type II cells, and squamous type I cells.he epithelium of the respiratory bronchioles has three cell populations. The first near the terminal bronchioles consists of the nonciliated columnar, ciliated columnar and basal cells. The second consists of nonciliated cuboidal cells.