News tagged with cells

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

New insights into latent HIV infections

In spite of ever more effective therapies, HIV keeps managing to survive in the body. A comprehensive project conducted by the Austrian Science Fund FWF has clarified the molecular processes which contribute to this effect. ...

Sep 26, 2016
popularity31 comments 0

Engineered blood vessels grow in lambs

In a hopeful development for children born with congenital heart defects, scientists said Tuesday they had built artificial blood vessels which grew unaided when implanted into lambs, right into adulthood.

Sep 27, 2016
popularity424 comments 1

Tumor paint brings light to toddler's brain tumor

In December of last year, Laura Coffman began to notice that something wasn't quite right with her 2-year-old son, Hunter. He was leaning to one side and seemed to lose his balance easily. When he became lethargic and started ...

Sep 28, 2016
popularity10 comments 0

Omega-3 fatty acid stops known trigger of lupus

A team of Michigan State University researchers has found that consuming an omega-3 fatty acid called DHA, or docosahexaenoic acid, can stop a known trigger of lupus and potentially other autoimmune disorders.

19 hours ago
popularity343 comments 0

Oligodendrocytes induce motor neuron death in ALS

A first-of-its-kind oligodendrocyte in vitro model shows that human cells normally supportive of motor neuron function play an active role in amyotrophic lateral sclerosis pathogenesis – and this discovery may point the ...

Sep 27, 2016
popularity56 comments 1

Unique molecular atlas of pancreas produced

Researchers at Karolinska Institutet have managed to produce the first molecular map of the genes that are active in the various cells of the human pancreas. They have also revealed differences in genetic activity between ...

Sep 23, 2016
popularity11 comments 0

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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