Neuronal cytoskeleton, Image courtesy of Mark Goldberg The cytoskeleton is a network of fibers located throughout the cell's cytoplasm. These fibers give support to the cell and ... Read More

Scientists have identified a protein that prevents HIV from spreading to other cells in the body. The protein, tetherin, works by causing HIV particles to clump together on the cell's surface. ... Read More

Organisms need energy to survive. Some organisms are capable of absorbing energy from sunlight and using it to produce sugar and other organic compounds such as lipids and proteins. This ... Read More

Researchers have discovered that amphibian skin contains an important antimicrobial agent that can be used to fight multi-drug resistant bacterial strains. People typically develop infections from these drug resistant microorganisms ... Read More

The aorta is the largest artery in the body. Arteries are vessels that carry blood away from the heart. The aorta carries and distributes oxygen rich blood to all arteries. With ... Read More

Can you identify the following cell structure? Nucleus Golgi Complex Ribosome Mitochondrion © Dennis Kunkel Need a hint? These cellular organelles are the cell's power producers. They convert energy ... Read More

Scientists have developed a method for using dead tissue to create live, beating hearts. Although the research was conducted with animals, it is hoped that information from this study can be ... Read More

Scientists have developed a method for creating embryonic stem cell lines without leading to the destruction of embryos. The resulting stem cells were able to develop into various other cell types ... Read More

Asters are radial microtubule arrays, in animal cells, which are located around each pair of centrioles. They appear to be shaped like a star and are involved in the cleavage ... Read More

Researchers have identified several specific proteins needed by HIV to exist in the body. When the production of these proteins was prohibited in tests, the levels of HIV were lowered. The researchers ... Read More

Woodcock U.S. Fish and Wildlife Service Look carefully at the picture. Can you see the bird hidden in the shrubbery? With predators always on the lookout for a meal, ... Read More

Bacteriophage Structure© Gary E. Kaiser Did you know that viruses can infect bacteria? These types of viruses are called bacteriophages . They are perhaps the best understood viruses, ... Read More

A new explanation for the disappearance of dinosaurs suggests that disease carrying insects may have contributed to the extinction of these animals. This theory challenges a popular theory that asteroids colliding ... Read More