New research from Washington University School of Medicine in St. Louis suggests that radiation therapy can reprogram heart muscle cells to what appears to be a younger state, fixing electrical problems that cause a life-threatening ...
Sep 24, 2021
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Researchers at the University of Westminster have found that small pieces of cells which play a role in cell to cell communication are released following intense exercise in healthy men.
Sep 24, 2021
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Few studies have explored the effect of psychological stressors on behavior, and neurogenesis, in the context of depression. With the elucidation of a vicarious social defeat stress mouse model, scientists from Japan have ...
Sep 24, 2021
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Scientists at Stanford University and the University of North Carolina at Chapel Hill have created a 3D-printed vaccine patch that provides greater protection than a typical vaccine shot.
Sep 24, 2021
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The Michigan State University researchers who created the first miniature human heart model with primary heart cell types, vascular tissue and a functioning structure of chambers have taken another step forward: developing ...
Sep 24, 2021
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Paclitaxel, or Taxol, is an old standby drug in the oncologist's tool belt. Yet only about half of breast cancer patients treated with the drug see their tumors shrink or disappear, and doctors and researchers have no way ...
Sep 24, 2021
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In 2020, an estimated 10 million people lost their lives to cancer. This devastating disease is underpinned by changes to our DNA—the instruction manual for all our cells.
Sep 24, 2021
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An international team of scientists have created a three-dimensional (3-D) pancreatic cancer tumour model in the laboratory, combining a bioengineered matrix and patient-derived cells that could be used to develop and test ...
Sep 24, 2021
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Researchers and data scientists at UT Southwestern Medical Center and MD Anderson Cancer Center have developed an artificial intelligence technique that can identify which cell surface peptides produced by cancer cells called ...
Sep 23, 2021
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Recent advances in immunotherapy have allowed doctors at the University of Colorado Cancer Center to more effectively treat melanomas that spread to other parts of the body. Immunotherapy drugs such as checkpoint inhibitors, ...
Sep 23, 2021
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The cell is the structural and functional unit of all known living organisms. It is the smallest unit of an organism that is classified as living, and is often called the building block of life. Some organisms, such as most bacteria, are unicellular (consist of a single cell). Other organisms, such as humans, are multicellular. (Humans have an estimated 100 trillion or 1014 cells; a typical cell size is 10 µm; a typical cell mass is 1 nanogram.) The largest known cell is an unfertilized ostrich egg cell.
In 1835 before the final cell theory was developed, a Czech Jan Evangelista Purkyně observed small "granules" while looking at the plant tissue through a microscope. The cell theory, first developed in 1839 by Matthias Jakob Schleiden and Theodor Schwann, states that all organisms are composed of one or more cells. All cells come from preexisting cells. Vital functions of an organism occur within cells, and all cells contain the hereditary information necessary for regulating cell functions and for transmitting information to the next generation of cells.
The word cell comes from the Latin cellula, meaning, a small room. The descriptive name for the smallest living biological structure was chosen by Robert Hooke in a book he published in 1665 when he compared the cork cells he saw through his microscope to the small rooms monks lived in.
This text uses material from Wikipedia, licensed under CC BY-SA
