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Primitive in Medical News

Evolution and epilepsy

... animals that evolved earlier than vertebrates, including sea urchins and primitive organisms related to vertebrates called lancelets, sea squirts, and ... Human Genome Research Institute. Analysis of the channels from these primitive organisms solved the mystery. The Rise of the Sodium Channel The ...

Genome sequence of lancelet shows how genes quadrupled during vertebrate evolution

... 550 million years through a four-fold duplication of the genes of more primitive ancestors. The late geneticist Susumu Ohno argued in 1970 that gene ... have only 20,000 to 25,000 genes, which means that, if our ancestors' primitive genome doubled and redoubled, most of the duplicate copies of genes must ...

A new way to think about Earth's first cells

... team of researchers at Harvard University have modeled in the laboratory a primitive cell, or protocell, that is capable of building, copying and containing DNA. Since there are no physical records of what the first primitive cells on Earth looked like, or how they grew and divided, the research ...

Can shopping behavior indicate personality type?

... it into four levels of personality development: Normal, neurotic, primitive and psychotic. Normal consumers spend less than they earn and save for ... In addition, he found that compulsive shoppers usually fall within the primitive personality type, while psychotic personalities go overboard in spending, ...

PET can help guide treatment decisions for a common pediatric cancer

... imaging with MIBG alone may not reveal some malignant lesions in the body. Neuroblastomaa form of cancer that starts in certain types of very primitive developing nerve cells found in an embryo or fetusoccurs most frequently in infants and young children. There are about 650 new cases of the cancer ...

Six Researchers to Receive Prestigious Awards from the American Society of Hematology

... techniques of using the long-term culture system as means of understanding the proliferative and renewal properties of normal and malignant primitive human hematopoietic stem cells. Louis M. Staudt, M.D., Ph.D. , of the National Cancer Institute's Center for Cancer Research in Bethesda, ...

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Primitive in Medical Technology

Correction to Earlier Release From Jewish Hospital and University of Louisville

... a pure population of stem cells, the c-kit-positive cells. The other institution injected cardiosphere-derived cells, which are a mixture of primitive and partially differentiated cells, complicating the recognition of the actual therapeutic cell. Our study involves a specific, well-characterized ...

A Functional Immune System Can Be Derived From Embryonic Stem Cells, Preliminary Study Finds

... the official journal of the American Society of Hematology. Embryonic stem cells (ESCs) are being intensely investigated as a renewable source of primitive cells theoretically able to regenerate all tissues and organs. The use of ESC-derived blood-forming cells may have an important advantage over ...

Roche Announces Positive Results in Solid Tumors Using Human Monoclonal Antibody Against IGF-1R (R1507)

... in this important disease area." About Ewing's Sarcoma The Ewing's family of tumors (EFT) includes primary tumors of bone (classic Ewing's sarcoma, primitive neuroectodermal tumor, and Askin tumor) and extraosseous primary tumors {National Cancer Institute}. Studies using immunohistochemical markers, ...
Primitive in Medical Dictionary

Cerebrum

... pericardium ; parietal layer of tunica vagina lis; parietal lobe ; parietal lobe epilepsy ; parietal lobe of cerebrum ; ... Supratentorial primitive neuroectodermal tumor (PNET) (WHO grade IV) is an embryonal tumor in the cerebrum or suprasellar region that is composed of undifferentiated or ...

Cell

... of Harvard Medical School ... CSF Cell Count See all Pictures & Images Why is the Test Performed? Germ cell tumor s develop from primitive cells that normally mature into ova (eggs) in the ovaries of women and sperm in the testicles of men. Ninety percent of all germ cell tumor s ...

Central nervous system

... seizure medicines; muscle relaxants; sleeping pills; ... central nervous system CNS. The brain and spinal cord. central nervous system primitive neuroectodermal tumor ... The central nervous system (CNS) - consists of the brain and the nerve s that make up the spinal cord that runs ...

Germ

... women or adolescent girls, are frequently uni lateral , and are generally curable if found and treated early. Germ cell tumor s develop from primitive cells that normally mature into ova (eggs) in the ovaries of women and sperm in the testicles of men. Ninety percent of all germ cell tumor s ...

Histiocyte

... rash on the scalp, ears, abdomen , and creases of the neck and face. Malignant fibrous histiocytoma - This sarcoma starts in either a type of primitive immune cells called histiocyte s or in cells that make fibrous (connecting) tissue . It usually appears as an area of bone destruction on ...

Moro reflex

... Moro reflex Definition: Moro reflex is a primitive reflex that is present at birth and typically disappears in the first few months of life. (See also infantile reflexes .) ... Startle ...

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Primitive in Biological News

Our 'caveman logic' embraces ESP over evolution

... matter. In CAVEMAN LOGIC: THE PERSISTENCE OF primitive THINKING IN A MODERN WORLD (Prometheus Books, ... Davis says CAVEMAN LOGIC: THE PERSISTENCE OF primitive THINKING IN A MODERN WORLD is the product of more ... brain circuitry." He asserts that much of this primitive thinking is supported by modern social ...

Researchers uncover world's oldest fossil impression of a flying insect

... world's oldest known full-body impression of a primitive flying insect, a 300 million-year-old specimen ... of work is remains of insect wings. Bodies of primitive flying insects are rarely preserved and therefore ... and body plan are consistent with those of primitive flying insects. He also points out that "there ...

Trichoplax genome sequenced -- 'rosetta stone' for understanding evolution

... sequence of Trichoplax , one of nature's most primitive multicellular organisms, providing a new insight ... genes, introns and spacer sequences like the most primitive organisms. However, size is not all that ... defined regulatory sequences that link these most primitive ancestors to higher animal species. The ...

New fossil tells twisted tale of how flatfishes ended up with two eyes on one side of head

... Friedman discovered that both represent primitive flatfishes with a somewhat asymmetrical skull. ... but the specimens also show characters more primitive than those found in any living form. Adding ... It also indicates that that mixed 'handedness' is primitive for flatfishes. "There is a broad implication ...

Meteorites a rich source for primordial soup

... thought to contain the oldest and the most primitive organic materials found in meteorites. CR ... other two meteorites had the highest ever seen in primitive meteorites180 and 249 ppm (parts per million). Other primitive meteorites that have been studied generally have ...

Massive dinosaur discovered in Antarctica sheds light on life, distribution of sauropodomorphs

... in Antarctica. The massive plant-eating primitive sauropodomorph is called Glacialisaurus hammeri ... are important because they help to establish that primitive sauropodomorph dinosaurs were more broadly ... discovery of Glacialisaurus hammeri shows that primitive sauropodomorphs probably coexisted with true ...

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Primitive in Biological Technology

Stem cells' 'suspended' state preserved by key step, scientists report

... used to simulate normal cell specialization, the scientists detected no differentiation of cardiac muscle, and also no formation of a tissue known as primitive endoderm, which is essential for the embryo to survive and develop. Chd1 also was shown by the research team to be necessary for the ...

USC researchers derive first embryonic stem cells from rats

... colleagues found that stem cells from rats, which have previously failed to propagate at all, could be grown indefinitely in the laboratory in the primitive embryonic state. An accompanying study led by researchers at the University of Cambridge, U.K., reported similar findings, independently ...

Genetic clock makers at UC San Diego publish their 'timepiece' in Nature

... know what the essential modules are, but based on our synthetic clock, it looks as though circadian clocks could have easily started as some kind of primitive negative feedback loop, with the positive loop coming later to regularize it," said Hasty. Wild Oscillations More and more studies are being ...

Cryo-Cell International and EndGenitor Technologies Announce Research Collaboration

... development by EndGenitor for cardiovascular and other therapeutic applications. MenSCs, which were discovered and developed by Cryo-Cell, are primitive mesenchymal progenitor cells found in menstrual blood and are easily retrievable without invasive techniques. "We think the project has significant ...

Principle of Recursive Genome Function Supersedes Dogmas; By Andras Pellionisz, Online Ahead of Print; (Scientific Visionary Vindicated)

... builds nucleic acids up into structural protein). In the course of constructing the Y-shaped template, the primary gene is turned on. Thus, the most primitive part of the process retains Watson's simplified scheme. The principle does not contradict the 'DNA makes RNA makes proteins' picture, ...

Stem Cell Researcher Wins Award for Excellence for Work With the ImageStream(R) System

... "Over the past two years, I have been working with Dr. Mariusz Z. Ratajczak at the University of Louisville on the characterization of the primitive Very Small Embryonic-Like (VSEL) stem cells isolated from murine and human adult organs and specimens. The ImageStream system has become one of the ...

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Primitive in Biological Definition

Origin of life

... Shaw (1973) commented: "If there ever was a primitive soup, then we would expect to find at least ... a "naked-gene" and postulate the emergence of a primitive metabolism which could provide an environment for ... in 1924 with Alexander Oparin 's notion of primitive self-replicating vesicles which predated the ...

Protein

... parce quil parat tre la substance primitive ou principale de la nutrition animale.» translated as: "I propose ... because it appears to be the primitive or principle substance of animal nutrition." Investigation of ...

Animal

... certain. Platyzoa The Platyzoa include the phylum Platyhelminthes , the flatworms. These were originally considered some of the most primitive Bilateria, but it now appears they developed from more complex ancestors. A number of parasites are included in this group, such as the flukes and ...

Brain

... . Vertebrates are characterized by increasing complexity in the cerebral cortex as one moves up the phylogenetic and evolutionary tree . primitive vertebrates, like fish, reptiles, and amphibians have cortices with less than six layers of neurons, a structure known as allocortex (Martin, 1996). ...

Cryptozoology

... summarily dismissed in the same way. There are several animals cited as examples for continuing cryptozoological efforts: The coelacanth , a primitive fish , a " living fossil " believed to have been extinct for 65 million years, was caught in a fishing net in 1938 off the coast of Africa . ...

Fungus

... on the inside; some soil-dwelling fungi actually trap roundworms and other small animals. Most chytrids, which are generally considered the most primitive group of fungi, do not form hyphae and instead grow directly from spores into multinucleate sporangia . A few other fungi have reverted from a ...

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Primitive in Biological Dictionary

Primitive streak

... The primitive streak is a structure that forms during the ... and mammalian embryonic development. primitive streak primitive streak Surface view of embryo of a rabbit . ...

Neural plate

... is created by a flat thickening opposite to the primitive streak of the ectoderm. Neurulation is a part ... Plate . extends from buccopharyngeal membrane to primitive node ... During neural induction, the embryonic ... Plate . extends from buccopharyngeal membrane to primitive node ... ... License Plate Recognition ...

Blastopore

... over and contributes to the canal joining the primitive gut with the cavity of the neural tube, the primitive nervous system. blastopore synonyms. ... blastopore . ... blastopore . n. opening of the primitive intestinal tract (Embryology) ... blastopore . ...

Vacuoles

... ... Vacuoles are found in the cells of plants, protists, and some primitive animals. ... Vacuoles . The term means "empty space" ... Plant cells ... ... Vacuoles are found in the cells of plants, protists, and some primitive ... Vacuoles are membrane-bound compartments within some eukaryotic ...

Notochord

... It is composed of cells derived from the mesoderm and defines the primitive axis of the embryo. In some vertebrates and chordates, it persists ... main support of the body in the lowest chordates, such as the lancelet; a primitive Chordata ( kör′dädə ) ( zoology ) The highest phylum in the animal ...

Nerve chord

... conducts impulses in all directions from the area stimulated, forming a primitive ... Nerve chord . References ... Get information, facts, and ... Ocean Life explores marine species and ecosystems, current ... Having a primitive nerve chord and gill slits, a group called the hemichordates ... ...

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