The chick somitogenesis oscillator is arrested before all paraxial
... Background: Somitogenesis is the earliest sign of segmentation in the developing vertebrate embryo. This process starts very early, soon after gastrulation has initiated and proceeds in an anterior-to-posterior direction during body axis elongation. It is widely accepted that somitogenesis is contro ...
... Background: Somitogenesis is the earliest sign of segmentation in the developing vertebrate embryo. This process starts very early, soon after gastrulation has initiated and proceeds in an anterior-to-posterior direction during body axis elongation. It is widely accepted that somitogenesis is contro ...
Chitosan Flocculation-sedimentation for Harvesting Selected
... process cannot be recycled back to the cultivation stage. Cationic polymers are other widely used but are generally more expensive than metal salts. Bioflocculation is another alternative method for making flocs using chemicals produced by acceptable co-culture microorganism (Chatsungnoen and Chisti ...
... process cannot be recycled back to the cultivation stage. Cationic polymers are other widely used but are generally more expensive than metal salts. Bioflocculation is another alternative method for making flocs using chemicals produced by acceptable co-culture microorganism (Chatsungnoen and Chisti ...
Vasopressin-stimulated Ca2 spiking in vascular smooth muscle cells
... fluorescence from several thousand cells. Background fluorescence was determined at the end of the experiment by quenching the fura 2 fluorescence for 10–15 min in the presence of 5 M ionomycin and 6 mM MnCl2 in Ca2⫹-free medium. After background fluorescence was subtracted, the 340- and 380-nm val ...
... fluorescence from several thousand cells. Background fluorescence was determined at the end of the experiment by quenching the fura 2 fluorescence for 10–15 min in the presence of 5 M ionomycin and 6 mM MnCl2 in Ca2⫹-free medium. After background fluorescence was subtracted, the 340- and 380-nm val ...
ExamView - Untitled.tst
... 12. Unfavorable conditions for mitosis include: a. toxins c. injury b. disease d. All of these answers are correct. 13. The chemical process in living organisms whereby cells are nourished and carry out their activities is: a. mitosis c. metabolism b. division d. reproduction 14. The phase of metabo ...
... 12. Unfavorable conditions for mitosis include: a. toxins c. injury b. disease d. All of these answers are correct. 13. The chemical process in living organisms whereby cells are nourished and carry out their activities is: a. mitosis c. metabolism b. division d. reproduction 14. The phase of metabo ...
Characterization of rat epimorphin/syntaxin 2 expression suggests a
... for generation of the normal crypt-villus axis containing all four differentiated cell types, as demonstrated previously in elegant endodermal-mesenchymal coculture and implantation experiments (24, 25). Investigators have begun to identify the specific mesenchymal molecules required for appropriate ...
... for generation of the normal crypt-villus axis containing all four differentiated cell types, as demonstrated previously in elegant endodermal-mesenchymal coculture and implantation experiments (24, 25). Investigators have begun to identify the specific mesenchymal molecules required for appropriate ...
Space to grow: interplay between growth and patterning in plant
... Combinatorial interactions between tissue polarity and growth result in the generation of diverse biological forms. Tissue polarity organizers are specific regions that anchor tissue polarity and define growth orientations [24]••. Principal orientations of specified growth are determined according t ...
... Combinatorial interactions between tissue polarity and growth result in the generation of diverse biological forms. Tissue polarity organizers are specific regions that anchor tissue polarity and define growth orientations [24]••. Principal orientations of specified growth are determined according t ...
Antibiotic-loaded silica nanoparticleâcollagen composite
... bacteria. The effect of gentamicin and rifamycin were evaluated on P. aeruginosa and S. aureus, respectively. Antibiograms were carried out using the disk diffusion method as described in United States Pharmacopeia. Briefly, a bacterial suspension (culture dilution 1:100) was spread on an agar petri ...
... bacteria. The effect of gentamicin and rifamycin were evaluated on P. aeruginosa and S. aureus, respectively. Antibiograms were carried out using the disk diffusion method as described in United States Pharmacopeia. Briefly, a bacterial suspension (culture dilution 1:100) was spread on an agar petri ...
Organ-Level Quorum Sensing Directs Regeneration in Hair Stem
... plucked single rows never regenerated, while squares always regenerated robustly. Rectangles occasionally exhibited modest regeneration, suggesting a distressor concentration very close to threshold under these circumstances. Fitting these three behaviors requires a value of l between 0.7 and 1.2 mm ...
... plucked single rows never regenerated, while squares always regenerated robustly. Rectangles occasionally exhibited modest regeneration, suggesting a distressor concentration very close to threshold under these circumstances. Fitting these three behaviors requires a value of l between 0.7 and 1.2 mm ...
Significance of hydrolytic enzymes expressed during xylem
... Wood products are important parts of our everyday life. The interests in wood as a raw material dates back to when humans discovered the use of fire for heating and cooking. Nowadays, wood is used for construction and furniture but it is also an important source of biopolymers that have a broad rang ...
... Wood products are important parts of our everyday life. The interests in wood as a raw material dates back to when humans discovered the use of fire for heating and cooking. Nowadays, wood is used for construction and furniture but it is also an important source of biopolymers that have a broad rang ...
THE PHAGOCYTOSIS AND INACTIVATION OF
... In contrast with these findings, other workers have emphasized the apparent survival of coagulase-positive staphylococci in suspensions of human polymorphonuclear leucocytes (3-5). The cells for these studies were obtained from whole blood, and were contaminated with other cell types. Since it has b ...
... In contrast with these findings, other workers have emphasized the apparent survival of coagulase-positive staphylococci in suspensions of human polymorphonuclear leucocytes (3-5). The cells for these studies were obtained from whole blood, and were contaminated with other cell types. Since it has b ...
Universitas Scientiarum
... research, and maintaining their genetic consistency is crucial for elaborating biological products, which depend on the authenticity and viability of strains (Don and Pemberton 1981, Malik and Claus 1987). To date, freeze-drying and ultra-freezing are considered the most efficient methods for preser ...
... research, and maintaining their genetic consistency is crucial for elaborating biological products, which depend on the authenticity and viability of strains (Don and Pemberton 1981, Malik and Claus 1987). To date, freeze-drying and ultra-freezing are considered the most efficient methods for preser ...
Mesoderm commitment to hematopoiesis - Development
... lineages in immediate proximity to each other (Haar and Ackerman, 1971). This observation provided the basis for the hypothesis, first put forward in the early 1900s, that these lineages derive from a common bi-potential precursor, a cell termed the hemangioblast (Sabin, 1920; Murray, 1932; and revi ...
... lineages in immediate proximity to each other (Haar and Ackerman, 1971). This observation provided the basis for the hypothesis, first put forward in the early 1900s, that these lineages derive from a common bi-potential precursor, a cell termed the hemangioblast (Sabin, 1920; Murray, 1932; and revi ...
... Vancouver strain are now occurring in the United States (54). Given that there are clinical differences in cryptococcosis caused by the two cryptococcal species, there is a need for rapid diagnostic tests that can distinguish these isolates. The classical methodology for distinguishing between serot ...
Activation of Hedgehog signaling by loss of GNAS causes
... studies in our mouse model, we propose that Hedgehog inhibitors currently used in the clinic for other conditions, such as cancer, may possibly be repurposed for treating heterotopic ossification and other diseases caused by GNAS inactivation. The human skeleton is a complex organ that forms during ...
... studies in our mouse model, we propose that Hedgehog inhibitors currently used in the clinic for other conditions, such as cancer, may possibly be repurposed for treating heterotopic ossification and other diseases caused by GNAS inactivation. The human skeleton is a complex organ that forms during ...
Transcriptionally repressed germ cells lack a subpopulation of
... two cell types during embryogenesis are still poorly understood. One characteristic that distinguishes germ cells from somatic cells in early C. elegans and Drosophila embryos is the ability to produce new messenger RNAs. In both organisms, several studies have suggested that somatic blastomeres act ...
... two cell types during embryogenesis are still poorly understood. One characteristic that distinguishes germ cells from somatic cells in early C. elegans and Drosophila embryos is the ability to produce new messenger RNAs. In both organisms, several studies have suggested that somatic blastomeres act ...
MICROSCOPIC AND FUNCTIONAL STUDIES ON
... microscopy (TEM) was used to image extracellular vesicles from different sources. Because of their small size, 30-500 nm, examination of extracellular vesicles requires high resolution from research equipment. The results obtained in this study show that transmission electron microscopy and confocal ...
... microscopy (TEM) was used to image extracellular vesicles from different sources. Because of their small size, 30-500 nm, examination of extracellular vesicles requires high resolution from research equipment. The results obtained in this study show that transmission electron microscopy and confocal ...
Multiple mechanisms determine the order of APC/C substrate
... inhibits Clb5 degradation, and that the timing of Clb5 degradation onset in the absence of the SAC likely indicates the time when APC/CCdc20 becomes active, possibly as a result of APC/C phosphorylation by Cdk1 (Rudner and Murray, 2000; Kraft et al., 2003). In addition, the rate of Clb5 degradation ...
... inhibits Clb5 degradation, and that the timing of Clb5 degradation onset in the absence of the SAC likely indicates the time when APC/CCdc20 becomes active, possibly as a result of APC/C phosphorylation by Cdk1 (Rudner and Murray, 2000; Kraft et al., 2003). In addition, the rate of Clb5 degradation ...
Identification of an H Antigen-like Blood Group
... column (0.9-cm radius, 60-cm length), and eluted with triethanolaminebuffered saline. Successive 1-ml fractions were assayed for C12 antigen content by radiometrie assay using M Ah C12. Radiometrie Assay. lodinization of M Ab Cl 2 and l T,A was per formed by the lodogen procedure as described previo ...
... column (0.9-cm radius, 60-cm length), and eluted with triethanolaminebuffered saline. Successive 1-ml fractions were assayed for C12 antigen content by radiometrie assay using M Ah C12. Radiometrie Assay. lodinization of M Ab Cl 2 and l T,A was per formed by the lodogen procedure as described previo ...
Transcriptionally repressed germ cells lack a
... two cell types during embryogenesis are still poorly understood. One characteristic that distinguishes germ cells from somatic cells in early C. elegans and Drosophila embryos is the ability to produce new messenger RNAs. In both organisms, several studies have suggested that somatic blastomeres act ...
... two cell types during embryogenesis are still poorly understood. One characteristic that distinguishes germ cells from somatic cells in early C. elegans and Drosophila embryos is the ability to produce new messenger RNAs. In both organisms, several studies have suggested that somatic blastomeres act ...
Coers, J, Bernstein-Hanley, I, Grotsky, D
... has been found that C. trachomatis strains isolated from the human urogenital tract express tryptophan synthase, an enzyme capable of using exogenous indole for the synthesis of tryptophan (14, 20). Supplementing indole can restore the capacity of C. trachomatis genital isolates to replicate in IFN- ...
... has been found that C. trachomatis strains isolated from the human urogenital tract express tryptophan synthase, an enzyme capable of using exogenous indole for the synthesis of tryptophan (14, 20). Supplementing indole can restore the capacity of C. trachomatis genital isolates to replicate in IFN- ...
Leaf development - The Virtual Plant
... The shoot apical meristem has an intrinsic capacity for self regulation and the positional specification of its cells implies the existence of an elaborate and versatile communication network. Van der Schoot and Rinne2 proposed a model that pictures this network as a system of overlapping signal cir ...
... The shoot apical meristem has an intrinsic capacity for self regulation and the positional specification of its cells implies the existence of an elaborate and versatile communication network. Van der Schoot and Rinne2 proposed a model that pictures this network as a system of overlapping signal cir ...
Evidence for Multiple Calcium Response
... and phenethylalcohol, while Mix B [IP3-producing odors in rat biochemical assays (Breer and Boekhoff, 1991)] contained ethyl vanillin, isovaleric acid, lilial, lyral, phenylethylamine and triethylamine. In some experiments, subsets of these mixtures were also tested (see Results). The concentration ...
... and phenethylalcohol, while Mix B [IP3-producing odors in rat biochemical assays (Breer and Boekhoff, 1991)] contained ethyl vanillin, isovaleric acid, lilial, lyral, phenylethylamine and triethylamine. In some experiments, subsets of these mixtures were also tested (see Results). The concentration ...
Regional Ischemic Immune Myopathy: A Paraneoplastic
... tissue. Immune polymyopathies are active myopathies with necrosis and regeneration of scattered muscle fibers and increased endomysial connective tissue but little mononuclear cell inflammation. Histiocytic inflammatory myopathies have foci of histiocytic cells and focal invasion of muscle fibers by cel ...
... tissue. Immune polymyopathies are active myopathies with necrosis and regeneration of scattered muscle fibers and increased endomysial connective tissue but little mononuclear cell inflammation. Histiocytic inflammatory myopathies have foci of histiocytic cells and focal invasion of muscle fibers by cel ...
chronic lymphocytic leukemia (cll)
... greater than 5 G/L, with less than 55% of the cells being atypical 2) The cell should have the presence of Bcellspecific differentiation antigens (CD19, CD20, and CD24) and be CD5(+) 3) A bone marrow aspirates showing greater than 30% lymphocytes ...
... greater than 5 G/L, with less than 55% of the cells being atypical 2) The cell should have the presence of Bcellspecific differentiation antigens (CD19, CD20, and CD24) and be CD5(+) 3) A bone marrow aspirates showing greater than 30% lymphocytes ...
Tissue engineering
Tissue engineering is the use of a combination of cells, engineering and materials methods, and suitable biochemical and physicochemical factors to improve or replace biological functions. While it was once categorized as a sub-field of biomaterials, having grown in scope and importance it can be considered as a field in its own right.While most definitions of tissue engineering cover a broad range of applications, in practice the term is closely associated with applications that repair or replace portions of or whole tissues (i.e., bone, cartilage, blood vessels, bladder, skin, muscle etc.). Often, the tissues involved require certain mechanical and structural properties for proper functioning. The term has also been applied to efforts to perform specific biochemical functions using cells within an artificially-created support system (e.g. an artificial pancreas, or a bio artificial liver). The term regenerative medicine is often used synonymously with tissue engineering, although those involved in regenerative medicine place more emphasis on the use of stem cells or progenitor cells to produce tissues.