 | Calcium wave in astrocyte Fluo4 imaging and electrophysiology recording of a CA1 astrocyte. Calcium wave is induced by 2-photon calcium uncaging |
 | Astrocyte activity near a blood vessel Calcium staining showing astrocyte activity near a blood vessel, in hippocampal slice. |
 | Structured illumination of Neuronal Cells A 3D rendering from a structured illumination (OMX) microscope of neuronal cells |
 | Svendsen on Astrocytes Dr. Clive Svendsen described the role of motor neurons and astrocytes in the brain and how they are affected by ALS. |
 | Neuronal Precursors, chain migration of Neuronal precursors born in the subventricular zone (SVZ) of the neonatal and adult rodent brain migrate 3--8 mm from the walls of the lateral ventricle into the olfactory bulb. This tangentially oriented migration occurs without the guidance of radial glia or axonal processes. The cells move closely associated, forming elongated aggregates called chains, which are ensheathed by astrocytes. We have developed a culture system in which postnatal mouse SVZ neuronal precursors assemble into chains with ultrastructural and immunocytochemical characteristics equivalent to those in vivo but without the astrocytic sheath. Time-lapse videomicrography revealed that individual cells migrate along the chains very rapidly (~122 µm/hr) in both directions. Periods of cell body translocation were interspersed with stationary periods. This saltatory behavior was similar to radial glia--guided migration but ~4 times faster. Neuronal precursors isolated from embryonic cortical ventricular zone or cerebellar external granule layer did not form chains under these conditions, suggesting that chain migration is characteristic of SVZ precursors. This study directly demonstrates that SVZ neuronal precursors migrate along each other without the assistance of astrocytes or other cell types. |
 | Adult Stem Cell Results & Embryonic Stem Cell Ethics Video Adult Stem Cell Research: Making a Difference Today from Rosenberg Communications, Inc. The Gerard Health Foundation has produced a powerful video on adult stem cell research, showing its advantages over embryonic stem cell research. The public domain video offers useful, yet often ignored, information about adult stem cell research. We believe the information you'll see in the video is essential to making an informed judgment about the debate over this research. This film is consistent with the teachings of the Roman Catholic Church, which state that the ablation of the inner cell mass (ICM) of the blastocyst, which critically and irremediably damages the human embryo, curtailing its development, is a gravely immoral act and consequently is gravely illicit. No end believed to be good, such as the use of stem cells for the preparation of other differentiated cells to be used in what look to be promising therapeutic procedures, can justify an intervention of this kind. A good end does not make right an action which in itself is wrong. An adult stem cell is an undifferentiated cell found among differentiated cells in a tissue or organ, can renew itself, and can differentiate to yield the major specialized cell types of the tissue or organ. The primary roles of adult stem cells in a living organism are to maintain and repair the tissue in which they are found. Some scientists now use the term somatic stem cell instead of adult stem cell. Unlike embryonic stem cells, which are defined by their origin (the inner cell mass of the blastocyst), the origin of adult stem cells in mature tissues is unknown. Research on adult stem cells has recently generated a great deal of excitement. Scientists have found adult stem cells in many more tissues than they once thought possible. This finding has led scientists to ask whether adult stem cells could be used for transplants. In fact, adult blood forming stem cells from bone marrow have been used in transplants for 30 years. Certain kinds of adult stem cells seem to have the ability to differentiate into a number of different cell types, given the right conditions. If this differentiation of adult stem cells can be controlled in the laboratory, these cells may become the basis of therapies for many serious common diseases. The history of research on adult stem cells began about 40 years ago. In the 1960s, researchers discovered that the bone marrow contains at least two kinds of stem cells. One population, called hematopoietic stem cells, forms all the types of blood cells in the body. A second population, called bone marrow stromal cells, was discovered a few years later. Stromal cells are a mixed cell population that generates bone, cartilage, fat, and fibrous connective tissue. Also in the 1960s, scientists who were studying rats discovered two regions of the brain that contained dividing cells, which become nerve cells. Despite these reports, most scientists believed that new nerve cells could not be generated in the adult brain. It was not until the 1990s that scientists agreed that the adult brain does contain stem cells that are able to generate the brain's three major cell types—astrocytes and oligodendrocytes, which are non-neuronal cells, and neurons, or nerve cells. Public domain film from: From http://h1.ripway.com/rosenbergComm/. (public domain). |
 | Zinc Finger and the Major Groove University of Illest Noize This is a video performance of Zinc Finger and the Major Groove's song "University of Illest Noize." It consists of some insane rhymes in the form of hip hop rock pop with some MAD SKILLZ rhyming, whatever you want to call it? |
 | Nothing is like loving you | 86.Episode | Heavy on my heart. IMPORTANT!READ!READ!READ!READ! okay so many of you asked me what brain tumor is so here is what wiki says about it. A brain tumor is any intracranial tumor created by abnormal and uncontrolled cell division, normally either in the brain itself (neurons, glial cells (astrocytes, oligodendrocytes, ependymal cells), lymphatic tissue, blood vessels), in the cranial nerves (myelin-producing Schwann cells), in the brain envelopes (meninges), skull, pituitary and pineal gland, or spread from cancers primarily located in other organs (metastatic tumors). Ultimately, it is estimated that there are 13,000 deaths per year in the United States alone as a result of brain tumors. thx to - wikipedia.org & here is a short version which i guess all of us can understand :) A brain tumor is a mass or growth of abnormal cells in your brain. Many different types of brain tumors exist. Some brain tumors are noncancerous (benign), and some brain tumors are cancerous (malignant). Brain tumors can begin in your brain (primary brain tumors), or cancer can begin in other parts of your body and spread to your brain (secondary, or metastatic brain tumors). thx to - mayoclinic.com Nothing is like loving you | 86.Episode | Heavy on my heart. recap of episode 85 : senna misses her older brother milo. sharpay collapsed & bella took her to the hospital. troy was talking with the doctor. the doctor said that sharpay might have a brain tumor. heavy on my heart. ft. ashley tisdale as sharpay evans zac efron as troy bolton guest starring : robert pattinson as alessandro - alex kristen stewart as isabella hilary duff as thalia duff milo ventimiglia as milo rodriguez amanda bynes as bridget stone songs : anastacia - heavy on my heart avant ft nicole scherzinger - lie about us |
 | Microglial cells Microglia grown on a substrate of astrocytes |
 | Treatment My son Jonathan getting treated for an inoperable brain tumour |
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