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  1. Cell | Definition, Types, Functions, Diagram, Division, Theory, & Facts ...

    Dec 10, 2025 · Usually microscopic in size, cells are the smallest structural units of living matter and compose all living things. Most cells have one or more nuclei and other organelles that carry out a …

  2. Cell (biology) - Wikipedia

    Cell theory, developed in 1839 by Matthias Jakob Schleiden and Theodor Schwann, states that all organisms are composed of one or more cells, that cells are the fundamental unit of structure and …

  3. What Is a Cell? | Learn Science at Scitable - Nature

    Some cells are organisms unto themselves; others are part of multicellular organisms. All cells are made from the same major classes of organic molecules: nucleic acids, proteins, carbohydrates...

  4. What is a cell?: MedlinePlus Genetics

    Feb 22, 2021 · Cells are the basic building blocks of all living things. The human body is made of trillions of cells that carry out specialized functions.

  5. Overview of Cells - Visible Body

    Cells are the microscopic units that make up living organisms. Learn about the characteristics and structures that all cells have in common.

  6. Cell - National Human Genome Research Institute

    2 days ago · All cells can be sorted into one of two groups: eukaryotes and prokaryotes. A eukaryote has a nucleus and membrane-bound organelles, while a prokaryote does not.

  7. Cell Structure & Function - SEER Training

    Cell Structure & Function Cells, the smallest structures capable of maintaining life and reproducing, compose all living things, from single-celled plants to multibillion-celled animals. The human body, …

  8. Cells - Fundamentals - Merck Manual Consumer Version

    Although there are different types of cells, most cells have the same components. A cell consists of a nucleus and cytoplasm and is contained within the cell membrane, which regulates what passes in …

  9. Cells - University of Utah

    Cells in Perspective In 1665, Robert Hooke coined the term cell to describe the structures he could see in cork with some of the first microscopes. Since then, technology has given us an increasingly …

  10. Cells | Open Access Journal | MDPI

    The Nordic Autophagy Society (NAS) and the Spanish Society of Hematology and Hemotherapy (SEHH) are affiliated with Cells and their members receive discounts on the article processing charges.