News tagged with species

Related topics: climate change , extinction , plants , biodiversity , plos one

Immune cells can promote liver cancer

A team of Newcastle University scientists have found that specialised immune cells in our bodies that normally act to protect us from infections can have a dark side in the development of liver cancer.

Apr 17, 2015
popularity 61 comments 0

Protein may be key to cancer's deadly resurgences

Tumor recurrence following a period of remission is the main cause of death in cancer. The ability of cancer cells to remain dormant during and following therapy, only to be reactivated at a later time, frequently ...

Mar 03, 2015
popularity 128 comments 1

Diabetes drug spurs host defense

Pioglitazone, a medication approved for treatment of type 2 diabetes, can help bypass genetic defects in chronic granulomatous disease to help white blood cells fight bacterial infections, according to researchers at National ...

Feb 11, 2015
popularity 6 comments 0

Species

In biology, a species is:

There are many definitions of what kind of unit a species is (or should be). A common definition is that of a group of organisms capable of interbreeding and producing fertile offspring, and separated from other such groups with which interbreeding does not (normally) happen. Other definitions may focus on similarity of DNA or morphology. Some species are further subdivided into subspecies, and here also there is no close agreement on the criteria to be used.

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