News tagged with cells

Related topics: protein · cancer cells · cancer · stem cells · immune system

New treatment for a rare form of encephalitis

Anti-NMDA receptor encephalitis is an inflammatory disease that affects the central nervous system. It is a rare autoimmune disease that results in the body producing antibodies against the NMDA receptor, a protein that plays ...

Jan 06, 2017
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Halting lethal childhood leukemia

Northwestern Medicine scientists have discovered the genetic driver of a rare and lethal childhood leukemia and identified a targeted molecular therapy that halts the proliferation of leukemic cells. The finding also has ...

Jan 06, 2017
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Using light to make single cells self-destruct

The human brain may be the most complex object in the universe – 86 billion cells of many different types making more than 100 trillion information-bearing connections. This complexity is a daunting prospect for researchers ...

Jan 06, 2017
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Cell (biology)

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

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