News tagged with cells

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

Study explores whole-body immunity

Over the next few months, millions of people will receive vaccinations in the hope of staving off the flu—and the fever, pain, and congestion that come with it.

23 hours ago
popularity114 comments 0

Decongestant 'highly effective' at starving cancer cells

Cancer researchers seeking non-toxic alternatives to harmful chemotherapy are reporting a highly significant result for a humble cold remedy. N-Acetyl cysteine (NAC) is routinely used as a dietary supplement and as a decongestant ...

22 hours ago
popularity637 comments 0

Diabetes: Immune system can regulate insulin

Inflammation processes are responsible for the failure of insulin production in diabetes patients. The patients' own immune systems can contribute to treatment of this disease: researchers at the University of Basel and University ...

15 hours ago
popularity0 comments 0

Drug could cut transplant rejection

A diabetes drug currently undergoing development could be repurposed to help end transplant rejection, without the side-effects of current immunosuppressive drugs, according to new research by Queen Mary University of London ...

17 hours ago
popularity1 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

Subscribe to rss feed