News tagged with membrane

Related topics: cells , cell membrane

Study unlocks more about cancer

Ground-breaking research from Griffith University on the Gold Coast has some scientists wondering if the entire study of cellular biology needs to be adjusted.

Feb 10, 2015
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Live coverage of the immune system at work

To better understand what happens during immune reactions in the body, researchers at Tübingen University have developed a new way of labeling T-cells, allowing them to track the T-cell movement in mice using non-invasive ...

Jan 22, 2015
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Researchers find new target for kidney cancer therapy

Cincinnati Cancer Center (CCC) researchers have discovered that a membrane channel, Transient Receptor Potential Melastatin 3, or TRPM3, promotes growth of kidney cancer tumors, and targeting this channel therapeutically ...

Nov 10, 2014
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Synapses always on the starting blocks

While neurons rapidly propagate information in their interior via electrical signals, they communicate with each other at special contact points known as the synapses. Chemical messenger substances, the neurotransmitters, ...

Oct 27, 2014
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Membrane

A membrane is a layer of material which serves as a selective barrier between two phases and remains impermeable to specific particles, molecules, or substances when exposed to the action of a driving force. Some components are allowed passage by the membrane into a permeate stream, whereas others are retained by it and accumulate in the retentate stream.

Membranes can be of various thickness, with homogeneous or heterogeneous structure. Membrane can also be classified according to their pore diameter. According to IUPAC, there are three different types of pore size classifications: microporous (dp < 2nm), mesoporous (2nm < dp < 50nm) and macroporous (dp > 50nm). Membranes can be neutral or charged, and particles transport can be active or passive. The latter can be facilitated by pressure, concentration, chemical or electrical gradients of the membrane process. Membranes can be generally classified into three groups: inorganic, polymeric or biological membranes. These three types of membranes differ significantly in their structure and functionality.

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