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Cell biology (also cellular biology or cytology) is a branch of biology that studies the structure, function, and behavior of cells. [1] [2] All living organisms are made of cells. A cell is the basic unit of life that is responsible for the living and functioning of organisms. [3] Cell biology is the study of the structural and functional ...
The cell is the basic structural and functional unit of all forms of life. Every cell consists of cytoplasm enclosed within a membrane; many cells contain organelles, each with a specific function. The term comes from the Latin word cellula meaning 'small room'. Most cells are only visible under a microscope.
Cell biology research extends to both the great diversities of single-celled organisms like bacteria and the complex specialized cells in multicellular organisms like humans. Formerly, the field was called cytology (from Greek κύτος, kytos, "a hollow;" and -λογία, -logia).
Cytopathology is frequently, less precisely, called "cytology", which means "the study of cells". [ 2 ] Cytopathology is commonly used to investigate diseases involving a wide range of body sites, often to aid in the diagnosis of cancer but also in the diagnosis of some infectious diseases and other inflammatory conditions. [ 3 ]
In biology, cell theory is a scientific theory first formulated in the mid-nineteenth century, that living organisms are made up of cells, that they are the basic structural/organizational unit of all organisms, and that all cells come from pre-existing cells.
Cytology of reactive mesothelium, with typical features. The main causes of reactive mesothelium are infection, trauma and cancer. [3] Wright's stain. The mesothelium is composed of an extensive monolayer of specialized cells (mesothelial cells) that line the body's serous cavities and internal organs.
The nuclear–cytoplasmic ratio (also variously known as the nucleus:cytoplasm ratio, nucleus–cytoplasm ratio, N:C ratio, or N/C) is a measurement used in cell biology. It is a ratio of the size (i.e., volume) of the nucleus of a cell to the size of the cytoplasm of that cell. [1]
Cells shown with immunostaining observed with a confocal microscope. Cytomics is the study of cell biology ( cytology ) and biochemistry in cellular systems at the single cell level. [ 1 ] [ 2 ] [ 3 ] It combines all the bioinformatic knowledge to attempt to understand the molecular architecture and functionality of the cell system (Cytome).