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  Encyclopedia of Keywords > Medicine > Anatomy > Tissues > Ectoderm > Germ   Michael Charnine

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    This Review contains major "Germ"- related terms, short phrases and links grouped together in the form of Encyclopedia article.


  1. A germ is the original form of a virus, prior to any replication. (Web site)
  2. The germ is a small, nutrient rich area which is often extracted along with the bran, the fiber-rich outer husk of the grain.
  3. The germ is a bacterium called Bacillus anthracis that "seeds" itself by forming long-lasting spores.
  4. The germ is a small nubbin on the grain which is often packed with nutrition, since it feeds the grain as it develops.
  5. The germ is a tiny portion of the seed where large amounts of beneficial nutrients are stored.

Three Embryonic Germ Layers

  1. The following description concerns gastrulation in echinoderms, representative of the triploblasts, or animals with three embryonic germ layers.

Primordial Germ Cell

  1. The germ cells produce a primordial germ cell (PGC) which becomes an oogonia which marks the start of mitosis.
  2. The female germ cells produce a primordial germ cell (PGC) which undergoes a mitotic division to form an oogonium.

Primordial Germ Cells

  1. The testes begin as an immigration of primordial germ cells into testicular cords along the genital ridge in the abdomen of the early embryo. (Web site)
  2. Cells expressing Germ plasm become primordial germ cells (PGCs) which will then give rise to the gametes.
  3. Extragonadal teratomas, such as those of the brain, head, and neck, are thought to arise from misplaced, pluripotential, primordial germ cells.

Germ Line

  1. The ES cells thereafter colonize the embryo and contribute to the germ line of the resulting chimeric animal.
  2. When retroviruses have integrated their own genome into the germ line, their genome is passed on to a following generation.
  3. Most biologists associate lamarckism with the idea of direct adaptive feedback from the soma to the germ line. (Web site)

Germ Plasm

  1. We propose that segregation of the germ plasm involves both stabilization of germline proteins in the germ line and cullin-dependent degradation in the soma. (Web site)
  2. The gene vasa has been shown in Drosophila to encode an essential component of the germ plasm and is thought to have a similar function in other organisms. (Web site)
  3. A type of localized cellular component found in most animals is the germ plasm, a specialized region of cytoplasm that specifies the germ-cell fate. (Web site)


  1. The Three Germ Layers: These are three different tissue types that exist during development in the embryo and that, together, will later make up the body. (Web site)
  2. During development, they make three germ layers: the endoderm, ectoderm, and the mesoderm (between ecto- and endoderm).
  3. Researchers believe the germ could also play a contributing role in the development of stomach cancers. (Web site)

Germ Theory

  1. Born on December 27 th, 1822 in Dole, France, Louis Pasteur is most famous for his development of the germ theory of disease.
  2. Imagine for a moment that a large proportion of Americans--let's say half--rejected the "germ theory" of infectious disease.

Germ Cell Tumor

  1. An elevated level of AFP suggests the presence of either a primary liver cancer or germ cell tumor.

Germ Cell Tumors

  1. Germ cell tumors can occur almost anywhere in the body and can be either benign or malignant.
  2. Diagnosis and treatment of germ cell tumors depends upon their location, their form, and their stage of development.

Germ Tubes

  1. Germ tubes were straight and formed at the ends or very close to the ends of conidia.
  2. Figure D. Young hyphae (germ tubes) growing from zoospore cysts of Pythium aphanidermatum, seen at different magnifications in the two images.

Germ Tube

  1. Once attached, the spore germinates by growing a germ tube and eventually locates a stoma by a touch responsive process known as thigmotropism.
  2. Appresoria are formed when the germ tube detects ridges that match the dimensions of the stomatal lips of its host species.
  3. Most species produce asexual spores known as conidia, which always germinate by means of a germ tube, never by the production of.

Three Primary Germ Layers

  1. ES cells are pluripotent and give rise during development to all derivatives of the three primary germ layers: ectoderm, endoderm and mesoderm. (Web site)
  2. The outermost of the three primary germ layers of an embryo, from which the epidermis, nervous tissue, and, in vertebrates, sense organs develop. (Web site)

Wheat Germ Oil

  1. Vegetable oils (particularly wheat germ oil), sweet potatoes, turnip greens, mangos, avocados, nuts, sunflower seeds, and soybeans. (Web site)
  2. Food sources rich in vitamin E are vegetable oils, wheat germ oil, soybeans, raw seeds and nuts, dried beans, and leafy green vegetables. (Web site)
  3. Wheat germ oil, corn germ oil, vegetable oils (Soy bean, cottonseed, sunflower, ground nut, mustard, coconut etc) cereals and eggs.

Germ Cell

  1. A germ cell is a kind of cell that is part of the germline, and is involved in the reproduction of organisms.
  2. If a mutation is present in a germ cell, it can give rise to offspring that carries the mutation in all of its cells.
  3. Parthenogenesis: Development of a germ cell without fertilization.

Germ Cells

  1. As the zygote undergoes mitotic divisions the germ plasm is ultimately restricted to a few cells of the embryo, these germ cells then migrate to the gonads.
  2. Germ cell tumors arise from germ cells, cells that are meant to form sperm in the testicles or eggs in the ovaries.
  3. When a tooth is first formed, it is nothing more than "germ cells," cells from a specialized layer of developmental tissue that forms within the bone.


  1. During gastrulation cells migrate to the interior of the blastula, consequently forming two (in diploblastic animals) or three (triploblastic) germ layers.

Three Germ Layers

  1. The mesoderm is one of the three germ layers in the early developing embryo, the other two layers being the ectoderm and the endoderm. (Web site)
  2. All the more complex animals (from flat worms to man) are triploblastic with three germ layers (a mesoderm as well as ectoderm and endoderm).
  3. The tissues studied were derived from the three germ layers of the early embryo: endoderm (liver), mesoderm (kidney), and ectoderm (brain).


  1. The army recognized both princes as sovereign, a state of things which contained the germ of further complications.


  1. This contraction, which is still common in Sweden, has scarcely ever found its way into A. S. or German, for hine, Germ. (Web site)


  1. But it turned soon enough to so narrow a conception of the individual that from the very start it engendered in itself the germ of its decadence.
  2. For the same reason, cancer is more likely to occur at an earlier age in an individual with an inherited (or germ line) mutation in a tumor suppressor gene.
  3. De novo methylation of the germ cells occurs, modifying and adding epigenetic information to the genome based on the sex of the individual [ 4].


  1. Endoderm: Some blastomeres move together as a sheet to the inside of the embryo, creating an inner germ layer called the endoderm.
  2. Protein is found in the germ and endosperm, the two inner layer s.


  1. Although it's called germ theory, the idea that infections are spread by small creatures is also a fact, supported by mountains of evidence.


  1. Tuberculosis is an infectious disease caused by the Koch bacillus, a germ that belongs to the Mycobacterium family.
  2. Using heat to pasteurize milk was first suggested in the late 1800's as a way to decrease the amount of a germ that causes tuberculosis.


  1. The germ of its growth was first sown within the bosom of the African National Congress, and it found its clear crystallisation in the Congress Youth League.


  1. But the seed contains the germ of life of the next generation.


  1. The decay will not spread, because it is sealed off from its food and germ supply. (Web site)


  1. Long-term infection with this germ can lead to inflammation and damage to the inner layer of the stomach, a possible pre-cancerous change. (Web site)


  1. In particular does this imply, that P(s)(x) is determined by the germ of s in x, which is expressed by saying that differential operators are local. (Web site)


  1. These tests can help the caregiver learn which type of germ is causing your gastroenteritis. (Web site)
  2. This type of germ contaminates eggs inside a hen's ovaries, before shells are even formed. (Web site)
  3. A type of germ cell tumor that may contain several different types of tissue, such as hair, muscle, and bone.


  1. It has been suggested that Plato may have heard legends about this, and used them as the germ of his story of Atlantis.


  1. A germ layer is a collection of) produce two or three '''primary tissue layers''' (sometimes called primary germ layers).


  1. Many structures are described as developing from one germ layer, such as the intestine from endoderm. (Web site)
  2. For invasion of leaves, dikaryotic urediospores differentiate germ tubes and infection structures that penetrate through stomata. (Web site)
  3. Early in fetal life, germ cells migrate from structures known as yolk sacs to the genital ridge.


  1. Mesoderm The middle germ layer of the early embryo; gives rise to connective tissue, muscle, bone, blood vessels, kidneys, and many other structures.
  2. Mesoderm is the germ layer that develops into muscle, bone, cartilage, blood, and connective tissue. (Web site)
  3. Mesenchyme Tissue: Connective tissue from all three germ layers in the embryo. (Web site)


  1. This suggests that BOULE may play a larger role than the other proteins in the development of female germ cells. (Web site)


  1. Thiamin is found in good amounts in milk, lean pork, legumes, rice bran, and the germ of cereal grains, but is lost during food processing and cooking. (Web site)


  1. If tests show you carry the germ, your doctor will probably give you antibiotics along with medicine that suppresses the production of acid in the stomach.
  2. A spermatogonium (plural: spermatogonia) is an intermediary male gametogonium (a kind of germ cell) in the production of spermatozoa.
  3. Mendel's work found that alleles assort independently in the production of gametes, or germ cells, ensuring variation in the next generation. (Web site)


  1. GERM TUBE - Initial hypha from a sprouting conidia, spore or yeast. (Web site)


  1. Some types of pneumonia cause symptoms that give important clues about which germ is causing the illness. (Web site)
  2. Due to the hormone balancing properties of germ oils, Biotone will also help reduce the symptoms of PMS and menopause.

Nervous System

  1. Other germ layers and organs might have had dorsoventral organization at the time of body inversion, and the nervous system might have centralized later.
  2. Germ cell tumors of the nervous system usually occur in children, most often in the pineal gland or above the pituitary gland. (Web site)


  1. Contact time needed varies with the product and the germ. (Web site)
  2. The product, gametes, are haploid germ cells. (Web site)
  3. WHEAT germ oil Derived from WHEAT. Gluten level will vary by product.

Life Cycle

  1. Researchers suspect the germ does so to make it easier for it to jump into cats to begin the sexual part of its life cycle. (Web site)
  2. The organism will then produce the germ cells that continue in the life cycle. (Web site)


  1. However, some sheaves do not have well; the germ of a smooth function at any point does not determine the function in any small neighboorhood of the point. (Web site)
  2. Using analytic continuation, we find that the germ at a point determines the function on any connected open set where the function can be everywhere defined. (Web site)
  3. This corresponds to the notion of germ of a function used elsewhere in mathematics.


  1. The innermost of the three primary germ layers of an animal embryo, developing into the gastrointestinal tract, the lungs, and associated structures. (Web site)


  1. The germ layer s in organogenesis differ by three processes: folds, splits, and condensation.


  1. Fig. 4. Gastrulation is the process by which cells of the blastoderm produce the three primary germ layers (Ettensohn, 2001).
  2. Gastrulation is the process by which the germ layers become positioned in an embryo. (Web site)
  3. Various regions of the three embryonic germ layers develop into the rudiments of organs during the process of organogenesis. (Web site)


  1. Mesoderm. Formation of Germ Layers.(continue)  Blastocyst further changes: 1.Endoderm = 1st germ layer. (Web site)
  2. For many mammals, it is sometime during formation of the germ layers that implantation of the embryo in the uterus of the mother occurs.
  3. J. Pathol. 144, 60–69. View at PubMed Rac1 is required for the formation of three germ layers during gastrulation. (Web site)


  1. Medicine > Anatomy > Tissues > Ectoderm
  2. Medicine > Anatomy > Tissues > Mesoderm
  3. Nature > Life > Animals > Embryo
  4. Agriculture > Crops > Grains > Rice
  5. Germs

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  Originally created: April 04, 2011.
  Links checked: July 31, 2013.
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