By: Melody St. John
A new method has been developed that enables scientists to control specific events in targeted cells of living tissue. This emerging technology is known as optogenetics. The technology, chosen by the interdisciplinary research journal Nature Methods as the Method of the Year (MOTY) across all...
By: Karen Struss
When the body contracts a viral infection, a healthy immune system will seek to destroy the virus, thereby eliminating the illness. However, sometimes the immune system’s response to the virus may cause joint inflammation. In very rare cases this inflammation can cause permanent damage...
Optogenetics: Controlling brain circuits with light
By: Erin Yorke
Optogenetics is the science of controlling brain circuits with light. It is a field that shows great potential for brain study, and treatment of its disorders. This exciting study "...combines optical and genetic techniques". Its promise lies in being able to turn neurons on...
By: Melody St. John
Optogenetics is a modern technology that enables researchers to precisely target and control specific events in biological systems, including freely-moving mammals. Gain or loss of function of well-defined biological activities in certain cells of living tissue is achieved by using a combination of genetic and...
How to learn about the human body online
By: Contentproz
Just when it seemed impossible to teach anything else online human anatomy courses are now available online! High school and college courses are available through several educational institutions. Students can choose an overview course on human anatomy or can study specific human anatomy systems such...
How the human body responds to fear
By: W. Diane Van Zwol
Humans respond to fear in many different ways, summarized under three categories, fight, flight and paralysis. Normally, fear serves as a protective mechanism for the human body. This is healthy and beneficial. For example, you approach a fire and are fearful of it, because you...
The origins of the sensations of itch and pain
By: Patrick Sills
Have you ever grabbed a hot pizza out of the oven and forgotten to use hand mitts? If not, have you ever stubbed your big toe on that coffee table leg or hit your knuckle against a steel beam underneath your car as you loosen...
Structure and function of the thyroid
By: Mindy Horton
The thyroid gland is located under the larynx in the neck and is the largest of all the endocrine glands. It has two wings (or lobes) joined by tissue called the isthmus that are wrapped around the trachea. The parathyroid glands are right behind the...
Tips on traveling after a knee replacement
By: Joyce Good Henderson
When an arthritic knee causes pain and stiffness because of the wear and tear on the cartilage, many people turn to a surgical replacement of the knee. A total knee replacement involves resurfacing the end of the femur with a metal implant, the top of...
Genetic mutations associated with aneuploidy
By: Dr. Bryan Katz
The term aneuploidy refers to any abnormal karyotype, or chromosomal endowment. With the exception of gametes and the XY sex chromosomes males, most human cells are diploid, meaning they contain two copies of the other 22 chromosomes (referred to as autosomes). Some cases of aneuploidy...

 

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