Life on and in stone – an endless story
... frequently settle on stone and abundantly produce photosynthetic pigments necessary for their existence. The development of photosynthetic communities on building materials is often associated with high humidity and water retention, producing a greenish, grey or red biofilm (chlorophyll, carotene). ...
... frequently settle on stone and abundantly produce photosynthetic pigments necessary for their existence. The development of photosynthetic communities on building materials is often associated with high humidity and water retention, producing a greenish, grey or red biofilm (chlorophyll, carotene). ...
Full Text - Journal of Skin and Stem Cell
... of accessibility. Subcutaneous tissue is a source of stromal stem cells having the capacity for multipotential differentiation (3). Dermis and adipose tissue are promising alternatives to bone-marrow-derived stem cell therapies. The present study provides a broad overview of the current knowledge ab ...
... of accessibility. Subcutaneous tissue is a source of stromal stem cells having the capacity for multipotential differentiation (3). Dermis and adipose tissue are promising alternatives to bone-marrow-derived stem cell therapies. The present study provides a broad overview of the current knowledge ab ...
Tissues
... – consists of several types of fibers and cells embedded in a gel-like ground substance: • Collagen fibers--provides strength and slight flexibility • Elastic—thin and very flexible coiled elastic fibers made from the protein elastin • Reticular—made of thinner collagen fibers which interconnect wit ...
... – consists of several types of fibers and cells embedded in a gel-like ground substance: • Collagen fibers--provides strength and slight flexibility • Elastic—thin and very flexible coiled elastic fibers made from the protein elastin • Reticular—made of thinner collagen fibers which interconnect wit ...
The differentiation in vitro of the neural crest cells of the
... In the present study, culture of trunk neural tube of mice gave rise to the appearance of a population of small stellate cells. Judging by their characteristic morphology, it seems that these cells are neural crest cells (Cohen & Konigsberg, 1975; Maxwell, 1976). In contrast to quail neural crest, d ...
... In the present study, culture of trunk neural tube of mice gave rise to the appearance of a population of small stellate cells. Judging by their characteristic morphology, it seems that these cells are neural crest cells (Cohen & Konigsberg, 1975; Maxwell, 1976). In contrast to quail neural crest, d ...
THE SCIENCE BEHIND AGERA Rx® The human skin is the largest
... barrier to water based products. This may in part explain their limited impact on the skin. Newer technologies are moving towards more dramatic effects requiring activity on cellular components within the skin other than keratinocytes. Many of the newer approaches are exploring the use of agents, wh ...
... barrier to water based products. This may in part explain their limited impact on the skin. Newer technologies are moving towards more dramatic effects requiring activity on cellular components within the skin other than keratinocytes. Many of the newer approaches are exploring the use of agents, wh ...
GROWTH PARAMETERS IN GREEN PHOTOTROPHIC ABSORPTION VALUES
... began to decrease due to bacterial activity: optical density also dimisnishes, but with much lower intensity. This is because, when growth finishes, other factors such as cell mass and some pigment absorption play a more important role on OD, than sulfur. Thus, it could be stated that OD,, is not a ...
... began to decrease due to bacterial activity: optical density also dimisnishes, but with much lower intensity. This is because, when growth finishes, other factors such as cell mass and some pigment absorption play a more important role on OD, than sulfur. Thus, it could be stated that OD,, is not a ...
The retinal neuroepithelium contains retinal progenitor cells that
... The retroviral vectors we use also integrate the host cell’s genome. When a virus enters the cell, it manipulates the host machinery to transcribe their RNA with reverse transcriptase. Using long term repeat sequences, the genome of the retrovirus will integrate into the genome of the host cell. Whe ...
... The retroviral vectors we use also integrate the host cell’s genome. When a virus enters the cell, it manipulates the host machinery to transcribe their RNA with reverse transcriptase. Using long term repeat sequences, the genome of the retrovirus will integrate into the genome of the host cell. Whe ...
johannes holtfreter - National Academy of Sciences
... in large numbers and used these to examine the path by which the organizer transmits neuralizing signals to the responding ectoderm (1933). He found that urodele embryos developing in a hypertonic salt solution retain a solid interior of cells because they fail to inflate the blastocoel. When gastru ...
... in large numbers and used these to examine the path by which the organizer transmits neuralizing signals to the responding ectoderm (1933). He found that urodele embryos developing in a hypertonic salt solution retain a solid interior of cells because they fail to inflate the blastocoel. When gastru ...
EDC Skin Care Ingredients Glossary
... body's tissues. Sulfur is an indispensable component in human nutrition. It is found in every cell in the body. Sulfur itself is held mainly in the muscles, skin, bones, nails and hair. One of the many advantages of MSM is that it is a small molecule with a molecular weight of 94. It is bio availabl ...
... body's tissues. Sulfur is an indispensable component in human nutrition. It is found in every cell in the body. Sulfur itself is held mainly in the muscles, skin, bones, nails and hair. One of the many advantages of MSM is that it is a small molecule with a molecular weight of 94. It is bio availabl ...
Plankton Laut
... • Plankton are defined by their ecological niche rather than their phylogenetic or taxonomic classification. ...
... • Plankton are defined by their ecological niche rather than their phylogenetic or taxonomic classification. ...
Complement, Age-Related Macular Degeneration and a Vision of
... clump of lipofuscin granules (arrow) may have All rights reserved. been expelled from the adjacent RPE cell. C, High magnification of a cell on the BM with anti-C5b-9 immunoreactivity on the basal ...
... clump of lipofuscin granules (arrow) may have All rights reserved. been expelled from the adjacent RPE cell. C, High magnification of a cell on the BM with anti-C5b-9 immunoreactivity on the basal ...
TheSeaCell®activefiber
... of the SeaCell®active fiber employing the "Lyocell process". Thanks to the seaweed present in SeaCell®active, a durable and wash-resistant incorporation of silver ions in the fiber can be achieved in an additional production step. The unique combination of cellulose, seaweed and silver makes for the ...
... of the SeaCell®active fiber employing the "Lyocell process". Thanks to the seaweed present in SeaCell®active, a durable and wash-resistant incorporation of silver ions in the fiber can be achieved in an additional production step. The unique combination of cellulose, seaweed and silver makes for the ...
Document
... takes a systems approach in comparing physiological adaptations to the environment. To that, I will add an integrative dimension by bringing in some more cell physiology and molecular biology. Overhead: Withers 1-2 (species distribution) Medical objectives have driven physiology research on mammals ...
... takes a systems approach in comparing physiological adaptations to the environment. To that, I will add an integrative dimension by bringing in some more cell physiology and molecular biology. Overhead: Withers 1-2 (species distribution) Medical objectives have driven physiology research on mammals ...
Independent Essay * Stem Cell Niches
... with neural progenitor cells, indicating a substantial increase in the precursor population. In order to further determine if the activation of β-catenin had the capacity to control neural mammalian development, transgenic mice were created to overexpress a varied form of βcatenin; NH2- terminally d ...
... with neural progenitor cells, indicating a substantial increase in the precursor population. In order to further determine if the activation of β-catenin had the capacity to control neural mammalian development, transgenic mice were created to overexpress a varied form of βcatenin; NH2- terminally d ...
JOHN MASON PAWELEK, Ph
... Aberrant glycosylation in melanoma and vitiligo. 2nd Annual Meeting of the Asian Society for Pigment Cell Research, Singapore, July 6-8, 2007. “The pathology of melanoma progression: Cell fusion as an explanation.” Linköping University, explanation. Linköping, Sweden, 3 October 2007. “Cancer cell fu ...
... Aberrant glycosylation in melanoma and vitiligo. 2nd Annual Meeting of the Asian Society for Pigment Cell Research, Singapore, July 6-8, 2007. “The pathology of melanoma progression: Cell fusion as an explanation.” Linköping University, explanation. Linköping, Sweden, 3 October 2007. “Cancer cell fu ...
FACULTY OF MEDICINE DEPARTMENT OF PATHOLOGY Dr
... 1. Dystrophic calcification involves damaged or dead tissue (e.g., calcification of atherosclerotic blood vessels and scarred aortic valves). 2. Metastatic calcification is secondary to hypercalcemia and is typically associated with hyperparathyroidism, hypervitaminosis D or end-stage renal disease. ...
... 1. Dystrophic calcification involves damaged or dead tissue (e.g., calcification of atherosclerotic blood vessels and scarred aortic valves). 2. Metastatic calcification is secondary to hypercalcemia and is typically associated with hyperparathyroidism, hypervitaminosis D or end-stage renal disease. ...
INVESTIGATIONS ON BIOLOGICAL EFFECT OF POLARIZED LIGHT
... polarized light in a dose of 4 J/cm2 exerted on the plasma membrane of primary embryo fibroblasts after single irradiation as well as after 4-time exposure. The response of cells towards ionizing radiation can be altered in different ways by physical factors (like the quality of radiation, or temper ...
... polarized light in a dose of 4 J/cm2 exerted on the plasma membrane of primary embryo fibroblasts after single irradiation as well as after 4-time exposure. The response of cells towards ionizing radiation can be altered in different ways by physical factors (like the quality of radiation, or temper ...
Origins of neural crest cells and cranial placodes at the edge of the
... Compartments (intrinsic segmentation) in the hindbrain Lumsden A, 2004 ...
... Compartments (intrinsic segmentation) in the hindbrain Lumsden A, 2004 ...
here - UCL
... Barnes R. D., and E. E. Ruppert, 1996. Invertebrate zoology, sixth edition. Ed. Harcourt, Orlando; Dubois P. 2005. Marine biology, course notes (Free University of Brussels); Hodgkiss I. J., and K. C. Ho,1997. Are changes in N:P ratio in coastal waters the key to increased red tieds blooms? Hydrobio ...
... Barnes R. D., and E. E. Ruppert, 1996. Invertebrate zoology, sixth edition. Ed. Harcourt, Orlando; Dubois P. 2005. Marine biology, course notes (Free University of Brussels); Hodgkiss I. J., and K. C. Ho,1997. Are changes in N:P ratio in coastal waters the key to increased red tieds blooms? Hydrobio ...
O A RIGINAL
... Delayed hypersensitivity reaction in tilapia was not marked by visible and localized skin responses, characteristic of this reaction in mammals and birds. The tilapias were injected intraperitoneally with a suspension of heat- killed, freeze-dried Mycobacterium tuberculosis bacilli and tested 4 and ...
... Delayed hypersensitivity reaction in tilapia was not marked by visible and localized skin responses, characteristic of this reaction in mammals and birds. The tilapias were injected intraperitoneally with a suspension of heat- killed, freeze-dried Mycobacterium tuberculosis bacilli and tested 4 and ...
Penicillin - Stephen F. Austin State University
... effective ways to shield the sensitive enzymes from the drug or methods to pump drugs quickly away from the cell. But the most common method is to create a special enzyme, a betalactamase (also called penicillinase) that seeks out the drug and destroys it. Beta-lactamases, like the one shown on the ...
... effective ways to shield the sensitive enzymes from the drug or methods to pump drugs quickly away from the cell. But the most common method is to create a special enzyme, a betalactamase (also called penicillinase) that seeks out the drug and destroys it. Beta-lactamases, like the one shown on the ...
Publications de l`équipe
... In multicellular organisms, distant cells can exchange information by sending out signals composed of single molecules or, as increasingly exemplified in the literature, via complex packets stuffed with a selection of proteins, lipids, and nucleic acids, called extracellular vesicles (EVs; also known ...
... In multicellular organisms, distant cells can exchange information by sending out signals composed of single molecules or, as increasingly exemplified in the literature, via complex packets stuffed with a selection of proteins, lipids, and nucleic acids, called extracellular vesicles (EVs; also known ...
Visualizing the actin cytoskeleton in living plant cells using a photo
... nm collection band (red channel). The green fluorescent cells, visualized using a 40× water immersion lens (N.A. 1.25) on an epi-fluorescent microscope were illuminated directly for 60 seconds with UV/violet light obtained through a 'D' filter cube (Leica microsystems: Excitation filter BP 355–425; ...
... nm collection band (red channel). The green fluorescent cells, visualized using a 40× water immersion lens (N.A. 1.25) on an epi-fluorescent microscope were illuminated directly for 60 seconds with UV/violet light obtained through a 'D' filter cube (Leica microsystems: Excitation filter BP 355–425; ...
Exporter la page en pdf
... In multicellular organisms, distant cells can exchange information by sending out signals composed of single molecules or, as increasingly exemplified in the literature, via complex packets stuffed with a selection of proteins, lipids, and nucleic acids, called extracellular vesicles (EVs; also known ...
... In multicellular organisms, distant cells can exchange information by sending out signals composed of single molecules or, as increasingly exemplified in the literature, via complex packets stuffed with a selection of proteins, lipids, and nucleic acids, called extracellular vesicles (EVs; also known ...
Chloroplast
... Plant cells normally contain another type of organelle that is not found in animals:chloroplasts. Chloroplasts convert light energy (from the sun) to chemical energy via the process of photsnthesis . The main pigment (green color) located in chloroplasts and involved in photosynthesis is chlorphyll ...
... Plant cells normally contain another type of organelle that is not found in animals:chloroplasts. Chloroplasts convert light energy (from the sun) to chemical energy via the process of photsnthesis . The main pigment (green color) located in chloroplasts and involved in photosynthesis is chlorphyll ...
Chromatophore
Chromatophores are pigment-containing and light-reflecting cells, or groups of cells, found in bacteria and a wide range of animals including amphibians, fish, reptiles, crustaceans and cephalopods. Mammals and birds, in contrast, have a class of cells called melanocytes for coloration.Chromatophores are largely responsible for generating skin and eye colour in cold-blooded animals and are generated in the neural crest during embryonic development. Mature chromatophores are grouped into subclasses based on their colour (more properly ""hue"") under white light: xanthophores (yellow), erythrophores (red), iridophores (reflective / iridescent), leucophores (white), melanophores (black/brown), and cyanophores (blue). The term chromatophore can also refer to coloured, membrane-associated vesicles found in some forms of photosynthetic bacteria.Some species can rapidly change colour through mechanisms that translocate pigment and reorient reflective plates within chromatophores. This process, often used as a type of camouflage, is called physiological colour change or metachrosis. Cephalopods such as the octopus have complex chromatophore organs controlled by muscles to achieve this, whereas vertebrates such as chameleons generate a similar effect by cell signalling. Such signals can be hormones or neurotransmitters and may be initiated by changes in mood, temperature, stress or visible changes in the local environment. Chromatophores are studied by scientists to understand human disease and as a tool in drug discovery.