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What are Stem Cells? Embryonic and Adult Stem Cells

in medicine, biology, education

A stem cell is an unspecialized cell that is not terminally differentiated and has the potential to acquire a more specialized function by differentiation. Stem cells may be classified based upon their stage of differentiation or their differentiation lineage. All terminally differentiated cells had their beginning in embryonic stem cell progenitors.

A New Population of Heart Stem Cells

in medicine, biology

Researchers have discovered a new population of adult stem cells in the heart, which could augment the development of new regeneration and repair therapies for people who have suffered heart attack or heart failure, a leading cause of death.

Phantom Limb - A New Study Using Anesthesia of the Arm

in medicine

Scientists now provide new information about how the brain generates phantom limbs.  According to the study there is no default position that the phantom moves into after it forms.

Some People Can Hallucinate Colors At Will

in medicine, biology

Scientists have found that some people have the ability to hallucinate colours at will – even without the help of hypnosis. The study focused on a group of people that had shown themselves to be ‘highly suggestible’ in hypnosis.

The study was published this week in the journal Consciousness and Cognition.

Embryonic Stem Cell Therapy At Risk? Geron Ends Clinical Trial

in medicine, biology

Embryonic stem cell therapy took a wild twist last week, when one of the first and strongest players withdrew from an ongoing embryonic stem cell-based clinical trial.  After years of aggressive research and development in embryonic stem cell technology and treatment strategies, and initiating a clinical trial for spinal cord injury with fanfare, Geron, a Menlo Park, California company, de

Perception of Shades of Gray – Perceptual Challenges for the Brain

in medicine, biology

Scientists have now provided new insight into how our brain perceives shades of gray. We are able to see in the starlight or in the bright sun, though the difference in illumination may be in multi-million folds.  The new research report explains how our brains deliver a perception of objects that is stable over this huge range of light that gets to our eyes.

Women Take Pill, Men Get Cancer - Oral Contraceptive and Prostate Cancer

in environment, medicine

When women take oral contraceptive, why should men get prostate cancer? The new controversial paper is published in BMJ open access journal linking oral contraceptive use in the population with prostate cancer. 

Today's teens will die younger of heart disease - Adolescents unhealthiest in US history

in medicine

High blood sugar, obesity, poor diet, smoking, little exercise make adolescents unhealthiest in US history. A new study that takes a complete snapshot of adolescent cardiovascular health in the United States reveals a dismal picture of teens who are likely to die of heart disease at a younger age than adults do today, reports Northwestern Medicine research.