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Cell biology (formerly cytology, from the Greek kytos, "container") is a scientific discipline that studies cells – their physiological properties, their structure, the organelles they contain, interactions with their environment, their life cycle, division and death. This is done both on a microscopic and molecular level. Cell biology research encompasses both the great diversity of single-celled organisms like bacteria and protozoa, as well as the many specialized cells in multicellular organisms such as humans. Knowing the components of cells and how cells work is fundamental to all biological sciences. Appreciating the similarities and differences between cell types is particularly important to the fields of cell and molecular biology as well as to biomedical fields such as cancer research and developmental biology. These fundamental similarities and differences provide a unifying theme, sometimes allowing the principles learned from studying one cell type to be extrapolated and generalized to other cell types. Hence, research in cell biology is closely related to genetics, biochemistry, molecular biology, immunology, and developmental biology.

molecular biology

Cell Biology, Chronology of Significant Events:--

 CHRONOLOGY OF SIGNIFICANT EVENTS IN CELL BIOLOGY  
 YEAR  EVENT
 1500  Jansen designed the first conpound microscope by containing two lenses.
 1665  Robert Hooke examined a thin section of bottle cork and described the basic unit as 'cell'.
 1665-70  Antony Von Leeuwen Hock observed unicellular organisms, described bacteria for the first time as ‘animacules'.
 1700-1800  Further descriptions and drawings of cells in plants and animals were provided by various scientists.
 1831  Robert Brown described the nucleus in plant cells.
 1838-39  Sehleiden and Schwann proposed the cell theory.
 1840  Purkioje proposed the term 'protoplasm’ to the contents of the cell.
 1855  Virchow suggested that cells arise from pre-existing cells by a process of cell division.
 1866  Haeckel eablished that nucleus was responsible for storing and transmitting hereditary characters.
 1866-68  Cell division was described in detail. Chromosomes were discovered.
 1880-83  Chloroplasts and other plastids were discovered.
 1890  Mitochondria was discovered.
 1898  Golgi apparatus was discovered.
 1900  Mendelisrn, forgotten since 1865 was rediscovered.
 1930  Electron microscopes were designed improving resolution.
 1946 to present  Electron microscopes were widely used revealing the ultra structure of cells

 




Chronology of Significant Events in Cell Biology


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