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The summary begins by explaining that cells are the smallest functional and structural unit of all living organisms. It highlights the importance of cells in understanding the complexity of organisms, their functions, and their processes. The page delves into various aspects of cell biology, including the cell's structure, components, types, and functions. The summary emphasizes that cells are surrounded by a plasma membrane that separates them from their environment, while also allowing the exchange of substances across it. It further explores the internal structures of a cell, such as the nucleus containing genetic material, cytoplasm, and organelles like mitochondria, endoplasmic reticulum, and Golgi apparatus. The distinction between prokaryotic and eukaryotic cells is also discussed, highlighting their structural and functional differences. The section on cell division elucidates the processes of mitosis and meiosis, which are vital for growth, development, and reproduction. The summary also touches upon the roles of cells in energy production, metabolism, protein synthesis, and molecular transport. The various types of cells, including animal, plant, fungal, and bacterial cells, are explored as well. Another important aspect of the page is the history of cell theory, with notable contributions from scientists such as Robert Hooke, Matthias Schleiden, and Theodor Schwann. The summary further discusses advancements in cell biology through the use of modern techniques, such as microscopy, genetic engineering, and cell culture. Importantly, the page also delves into the significance of cells in understanding diseases, as well as their applications in biotechnology and medical research. The impact of stem cells and their potential in regenerative medicine is briefly touched upon. In conclusion, the Wikipedia page for "Cell (biology)" provides an informative and comprehensive overview of the subject. It covers the structure, components, types, functions, division, history, and various applications of cells, making it a valuable resource for anyone seeking to understand the intricacies of cell biology.