Biology News
Cardiac biology: Cell plasticity helps hearts to repair - Nature.com

Nature.com
The damage elicits repair and regenerative responses that provoke the removal of dying cells and cell debris, recruit immune cells and initiate the formation of new blood vessels to recover blood supply. Fibroblast cells play a central part in this ...
Newswise (press release)

Navigation for nerve cells - HealthCanal.com

HealthCanal.com
Researchers at the Max Planck Institute of Neurobiology in Martinsried, together with colleagues at the Universities of Oxford and Frankfurt have now discovered that FLRT proteins on the surface of progenitor cells can induce repellent and attractant ...

Physiology: Relax and come in - Nature.com

Nature.com
During inflammation, lymph nodes swell with an influx of immune cells. New findings identify a signalling pathway that induces relaxation in the contractile cells that give structure to these organs. See Letter p.498 ...

Cells Alive

Florida, Texas - United States

During development from stem to fully differentiated, cells in the body alternately divide (mitosis) and "appear" to be resting (interphase). This sequence of activities exhibited by cells is called the cell cycle.
Interphase, which appears to the eye to be a resting stage between cell divisions, is actually a period of diverse activities. Those interphase activities are indispensible in making the next mitosis possible.

Related
United States

This animation demonstrates the stages of mitosis in an animal cell. Use the control buttons in the upper left to run the complete animation. Events during Mitosis Interphase: Cells may appear inactive during this stage, but they are quite the opposite. This is the longest period of the complete cell cycle during which DNA replicates, the centrioles divide, and proteins are actively produced. For a complete description of the events during

United States

Human neutrophils are constantly produced in the marrow and released into the blood to search for invading pathogens. Apoptosis AnimationAfter only one day, they "commit suicide" and are replaced by younger cells. Beginning with the typical neutrophil shape, the apoptotic neutrophil in the clip above undergoes a series of changes including violent membrane blebbing, called zeiosis, (animation to the right) and fragmentation of DNA creating a vacu

Are Viruses Alive?
United States

Educational site that discusses what defines life and whether viruses fit into this definition.

Oceans Alive
United States

Celebrates marine biodiversity and explores ways to help save our oceans.

Gondwana Alive
United States

Organization promoting biodiversity and working to stem the Sixth Extinction.

Bio-alive
United States

Bio-alive is a life science online video sharing community, and the premier destination to watch and share biology and life science related videos worldwide through the web. Our mission is to promote scientific literacy and web based education by providing a online community for video sharing in all biology and life science related fields. Medical students, doctors, researchers and life scientists can watch and share their favorite videos in the

United States

Summary of the Out-Of-Africa debate, by Dr. George Johnson.

United States

Companion site to an American Museum of Natural History exhibition with a variety of information about butterflies.

Africa Alive - African Animal Adventure
United Kingdom

A walking safari set in 100 acres. There are plenty of areas around the park where you can sit and have your picnic; we also have a dedicated picnic area for our guests to use if they prefer to eat under cover.

United States

Non-profit organization dedicated to the worldwide protection of the polar bear and its arctic habitat.