Immunology

Home birth may start babies off with health-promoting microbes

For all of human history, babies have been born where their mothers lived—whether in a house, hut or cave. Only in the last century has birth moved out of the home and into the hospital. How has that changed the types of ...

Health

Scientists find thirdhand smoke affects cells in humans

Thirdhand smoke can damage epithelial cells in the respiratory system by stressing cells and causing them to fight for survival, a research team led by scientists at the University of California, Riverside, has found. The ...

Medical research

Functional hair follicles grown from stem cells

Scientists from Sanford Burnham Prebys have created natural-looking hair that grows through the skin using human induced pluripotent stem cells (iPSCs), a major scientific achievement that could revolutionize the hair growth ...

Oncology & Cancer

Scientists discover molecular key to how cancer spreads

Yale researchers have discovered how metastasis, the spread of cancer cells throughout the body, is triggered on the molecular level, and have developed a tool with the potential to detect those triggers in patients with ...

Immunology

Discovery may help kick-start ageing immune system

The thymus is the powerhouse producing the immune system's T cells, which combat infection in our body. Yet this vital organ is one of the first to diminish in function as we age, resulting in a gradual loss of T cell production ...

Immunology

Vaccine investigators use bacterium's own protein against it

A team of Agricultural Research Service (ARS) and university scientists is investigating a new "ingredient" for use in vaccinating cattle against Johne's disease, a chronic wasting affliction that costs the U.S. dairy industry ...

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Epithelium

In biology and medicine, an epithelium is a tissue composed of cells that line the cavities and surfaces of structures throughout the body. Many glands are also formed from epithelial tissue. It lies on top of connective tissue, and the two layers are separated by a basement membrane.

In humans, epithelium is classified as a primary body tissue, the other ones being connective tissue, muscle tissue and nervous tissue.

Epithelium is often defined by the expression of the adhesion molecule e-cadherin (as opposed to n-cadherin, which is used by cells of the connective tissue).

Functions of epithelial cells include secretion, selective absorption, protection, transcellular transport and detection of sensation and they commonly as a result present extensive apical-basolateral polarity (e.g. different membrane proteins expressed) and specialisation.

This text uses material from Wikipedia, licensed under CC BY-SA