A Call to Action from Madrid Climate Change: Epithelial Cells (EpC) line the surfaces and cavities of tissues and organs throughout the body, functioning primarily for protection, secretion, selective absorption, and trans-cellular transport. 2 Each lung is divided into different sections/sacs called lobes. The right lung has three lobes whereas the left has only 2. A lobectomy is a surgical removal of a lobe. 3 19
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