Cell division in the green microalga Marvania
... On the basis of the present observations bined with information obtained the division cycle of this ...
... On the basis of the present observations bined with information obtained the division cycle of this ...
Membranous Structures of the Cell The Cell Membrane
... (2) The glycocalyx of some cells attaches to the glycocalyx of other cells, thus attaching cells to one another. (3) Many of the carbohydrates act as receptor substances for binding hormones, such as insulin; when bound, this combination activates attached internal proteins that, in turn, activate a ...
... (2) The glycocalyx of some cells attaches to the glycocalyx of other cells, thus attaching cells to one another. (3) Many of the carbohydrates act as receptor substances for binding hormones, such as insulin; when bound, this combination activates attached internal proteins that, in turn, activate a ...
root tips - Oxford Academic
... within about 10 min of exposure to this temperature (SH Lee et al., unpublished observations), and thus provide a valuable experimental system to study various aspects of cell biology in relation to this and other factors. Using the root pressure probe for measurements of root pressure developed in ...
... within about 10 min of exposure to this temperature (SH Lee et al., unpublished observations), and thus provide a valuable experimental system to study various aspects of cell biology in relation to this and other factors. Using the root pressure probe for measurements of root pressure developed in ...
The Control of Arabidopsis thaliana Growth by Cell
... Regulated at the Posttranslational Level Previous studies reported that FBL17 is positively regulated by the transcription factor E2FA (Gusti et al., 2009) and repressed by RBR1 (RETINOBLASTOMA-RELATED1; Zhao et al., 2012), indicating that its expression is under cell cycle control, in particular du ...
... Regulated at the Posttranslational Level Previous studies reported that FBL17 is positively regulated by the transcription factor E2FA (Gusti et al., 2009) and repressed by RBR1 (RETINOBLASTOMA-RELATED1; Zhao et al., 2012), indicating that its expression is under cell cycle control, in particular du ...
Human stem cell aging: do mitochondrial DNA mutations have a
... differentiates into an effector/progenitor cell (Liu & Rando, 2011) to maintain normal tissue function. As we age, stem cells incur damage due to features of both chronological and replicative aging, especially stem cells in rapidly replicating tissues such as the gut, skin, and blood (Liu & Rando, ...
... differentiates into an effector/progenitor cell (Liu & Rando, 2011) to maintain normal tissue function. As we age, stem cells incur damage due to features of both chronological and replicative aging, especially stem cells in rapidly replicating tissues such as the gut, skin, and blood (Liu & Rando, ...
2. Archenteron Morphogenesis in the Sea Urchin
... ments destroyed filopodia but the archenteron continued to extend until it reached up to two-thirds its final length (Hardin, 1988). Cell adhesion changes also occur during the time of invagination as dem onstrated by aggregation and sorting experiments (McClay et al., 1977; Bernacki and McClay, 19 ...
... ments destroyed filopodia but the archenteron continued to extend until it reached up to two-thirds its final length (Hardin, 1988). Cell adhesion changes also occur during the time of invagination as dem onstrated by aggregation and sorting experiments (McClay et al., 1977; Bernacki and McClay, 19 ...
IB Biology 1 Q3 Test Guide – 1314
... Draw the structure of glycerol and a generalized fatty acid. State three functions of lipids. List and identify the molecular structure of the common types of lipids. Identify and describe the difference between saturated and unsaturated fatty acids. From what sources are saturated and unsaturated f ...
... Draw the structure of glycerol and a generalized fatty acid. State three functions of lipids. List and identify the molecular structure of the common types of lipids. Identify and describe the difference between saturated and unsaturated fatty acids. From what sources are saturated and unsaturated f ...
Daniel Mueller , Anika Koetemann , Valery Shevchenko , Christophe
... compared to 2D cultures. Liver specific albumin production was higher in the HepG2 organotypic cultures as compared to both monolayer and collagen-sandwich cultures. CYP1A induction capacity was significantly improved by organotypic cultivation. The acute toxicity (24 h) of tamoxifen, an anti-cancer ...
... compared to 2D cultures. Liver specific albumin production was higher in the HepG2 organotypic cultures as compared to both monolayer and collagen-sandwich cultures. CYP1A induction capacity was significantly improved by organotypic cultivation. The acute toxicity (24 h) of tamoxifen, an anti-cancer ...
Effect of sanguinarine in drinking water on Salmonella control and
... nutrient distribution toward the immune system [2]. Inflammation of the intestinal mucosa also compromises the nutrient absorption capacity because it increases the number of inflammatory cells in the intestinal mucosa. The balance of intestinal microbiota is also important when intestinal mucosa in ...
... nutrient distribution toward the immune system [2]. Inflammation of the intestinal mucosa also compromises the nutrient absorption capacity because it increases the number of inflammatory cells in the intestinal mucosa. The balance of intestinal microbiota is also important when intestinal mucosa in ...
Molecular anatomy of antigen-specific CD8+ T cell
... cancers. However, it is not clear in vivo whether CD8 + T cells can engage multiple targets simultaneously, engagement results in the formation of an immunologic synapse or molecules involved in CD8 function are redistributed to the synapse. We used here high-resolution microscopy to visualize inter ...
... cancers. However, it is not clear in vivo whether CD8 + T cells can engage multiple targets simultaneously, engagement results in the formation of an immunologic synapse or molecules involved in CD8 function are redistributed to the synapse. We used here high-resolution microscopy to visualize inter ...
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... well as neighboring cells. Gibson and colleagues argued that, if all cells have asynchronous, but roughly uniform cell cycle times, division leads to an average polygon number of six. Furthermore, they concluded that such uniform cell division can theoretically lead to the convergence of epithelial ...
... well as neighboring cells. Gibson and colleagues argued that, if all cells have asynchronous, but roughly uniform cell cycle times, division leads to an average polygon number of six. Furthermore, they concluded that such uniform cell division can theoretically lead to the convergence of epithelial ...
microscopy technique-2
... An inoculum is spread across the surface of an agar plate in a sequential pattern of streak (as indicated by the numbers n arrows) The loop is sterilized between streaks In streak 2,3 and 4, bacteria are picked up from previous streak, diluting the number of cells each time These develop into separa ...
... An inoculum is spread across the surface of an agar plate in a sequential pattern of streak (as indicated by the numbers n arrows) The loop is sterilized between streaks In streak 2,3 and 4, bacteria are picked up from previous streak, diluting the number of cells each time These develop into separa ...
growth of human diploid fibroblasts in media with different amino
... but in most cases the cell population would have to be of the order of 2-4 x 1 o cells/cm2 (0-5-1 x io 5 cells/ml) or higher depending on the experimental conditions. However, the range of cell attachment in our experiments varied between 4X io 3 and 4X io 2 cells/cm2 or io4 and io 3 cells/ml. Thus, ...
... but in most cases the cell population would have to be of the order of 2-4 x 1 o cells/cm2 (0-5-1 x io 5 cells/ml) or higher depending on the experimental conditions. However, the range of cell attachment in our experiments varied between 4X io 3 and 4X io 2 cells/cm2 or io4 and io 3 cells/ml. Thus, ...
Targets of Oncogenes and Tumor Suppressors: Key for
... domain of the Src protooncoprotein followed by recruiting of adapter Grb2 protein, and activation of Ras and MAP kinase cascades (Fig. 2) (see also review by A. G. Tatosyan and O. A. Mizenina in this issue). Increase of cyclin D1 gene expression (probably mediated by proteins Jun, Ets1, Ets2 [21]) i ...
... domain of the Src protooncoprotein followed by recruiting of adapter Grb2 protein, and activation of Ras and MAP kinase cascades (Fig. 2) (see also review by A. G. Tatosyan and O. A. Mizenina in this issue). Increase of cyclin D1 gene expression (probably mediated by proteins Jun, Ets1, Ets2 [21]) i ...
Stage-Specific Histone Modification Profiles Reveal Global
... reflecting the lineage-specific use of the genome in somatic cells. Interestingly, direct reprogramming of somatic cells to an induced pluripotent state reverses these changes largely, although not completely. During reprogramming, histones become hypermethylated at H3K4, bivalent domains are re-est ...
... reflecting the lineage-specific use of the genome in somatic cells. Interestingly, direct reprogramming of somatic cells to an induced pluripotent state reverses these changes largely, although not completely. During reprogramming, histones become hypermethylated at H3K4, bivalent domains are re-est ...
PKCδ is Required for Survival of Cells Expressing
... suppression of PKCδ activity was also determined to be PI3K. PI3K (p110CAAX), was sufficient for induction of apoptosis after PKCδ inhibition. Thus, the same p21Ras effector, PI3K, is responsible for delivering both a proapoptotic signal, and a survival signal, the latter being mediated by PKCδ and ...
... suppression of PKCδ activity was also determined to be PI3K. PI3K (p110CAAX), was sufficient for induction of apoptosis after PKCδ inhibition. Thus, the same p21Ras effector, PI3K, is responsible for delivering both a proapoptotic signal, and a survival signal, the latter being mediated by PKCδ and ...
Ch. 7-3 and 7-4 Vocabulary
... vacuole are released to the exterior through fusion of the vacuole membrane with the cell membrane. ...
... vacuole are released to the exterior through fusion of the vacuole membrane with the cell membrane. ...
Transcription Domain-Associated Repair in Human Cells
... transcription, usually resulting in the preferential repair of the transcribed strand (TS) over that of the nontranscribed strand (NTS) in active genes, a subpathway termed transcriptioncoupled repair (TCR). The mechanistic details of TCR are still unclear, although it is generally assumed that RNA ...
... transcription, usually resulting in the preferential repair of the transcribed strand (TS) over that of the nontranscribed strand (NTS) in active genes, a subpathway termed transcriptioncoupled repair (TCR). The mechanistic details of TCR are still unclear, although it is generally assumed that RNA ...
The A6B4 Integrin Can Regulate ErbB-3 Expression: Implications for
... cells and they elucidated some of the mechanisms involved. Specifically, these studies identified key roles for a6h4 in the migration, invasion, and survival of carcinoma cells (7–9). Studies by several other laboratories have substantiated and extended these findings (10). In fact, there is now com ...
... cells and they elucidated some of the mechanisms involved. Specifically, these studies identified key roles for a6h4 in the migration, invasion, and survival of carcinoma cells (7–9). Studies by several other laboratories have substantiated and extended these findings (10). In fact, there is now com ...
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... al. 1984). Indirect immunofluorescence staining for FN is first noticed at the early blastula stage. Significantly, FN is exclusively confined to the roof of the blastocoel. This particular pattern is clearly apparent with frozen sections prepared from late blastulae (stage 7). As gastrulation proce ...
... al. 1984). Indirect immunofluorescence staining for FN is first noticed at the early blastula stage. Significantly, FN is exclusively confined to the roof of the blastocoel. This particular pattern is clearly apparent with frozen sections prepared from late blastulae (stage 7). As gastrulation proce ...
10.2 pp (Biology 2015-16)
... The genetic information that is passed on from one generation of cells to the next is carried by chromosomes. Every cell must copy its genetic information before cell division begins. Each daughter cell gets its own copy of that genetic information. Cells of every organism have a specific number of ...
... The genetic information that is passed on from one generation of cells to the next is carried by chromosomes. Every cell must copy its genetic information before cell division begins. Each daughter cell gets its own copy of that genetic information. Cells of every organism have a specific number of ...
PIERGIORGIO PETTAZZONI
... Titolo: 4-Hydroxynonenal (HNE)-protein adducts identification in HL-60 human lukemic cells 4-Hydoxynonenal (HNE), one of the most important aldheydic products generated from the lipidic peroxidation of ω-6 polyunsaturated fatty acid, has been suggested to play a critical role in the pathogenesis of ...
... Titolo: 4-Hydroxynonenal (HNE)-protein adducts identification in HL-60 human lukemic cells 4-Hydoxynonenal (HNE), one of the most important aldheydic products generated from the lipidic peroxidation of ω-6 polyunsaturated fatty acid, has been suggested to play a critical role in the pathogenesis of ...
Mader 11 ch 4 Cell Structure and Function
... – Produced by Golgi apparatus – over 40 types of enzymes – Function to: • digest bacteria, viruses, toxins • degrade worn out cell parts • break down non useful fetal tissue – no longer thought true (programmed cell death instead) ...
... – Produced by Golgi apparatus – over 40 types of enzymes – Function to: • digest bacteria, viruses, toxins • degrade worn out cell parts • break down non useful fetal tissue – no longer thought true (programmed cell death instead) ...
CELL PARTS Chapter 4 - Forest Hills School District
... Images from: http://vilenski.org/science/safari/cellstructure/cellmembrane.html http://www.mccc.edu/~chorba/celldiagram.htm ...
... Images from: http://vilenski.org/science/safari/cellstructure/cellmembrane.html http://www.mccc.edu/~chorba/celldiagram.htm ...
Cellular differentiation
In developmental biology, cellular differentiation isa cell changes from one cell type to another. Most commonly this is a less specialized type becoming a more specialized type, such as during cell growth. Differentiation occurs numerous times during the development of a multicellular organism as it changes from a simple zygote to a complex system of tissues and cell types. Differentiation continues in adulthood as adult stem cells divide and create fully differentiated daughter cells during tissue repair and during normal cell turnover. Some differentiation occurs in response to antigen exposure. Differentiation dramatically changes a cell's size, shape, membrane potential, metabolic activity, and responsiveness to signals. These changes are largely due to highly controlled modifications in gene expression and are the study of epigenetics. With a few exceptions, cellular differentiation almost never involves a change in the DNA sequence itself. Thus, different cells can have very different physical characteristics despite having the same genome.A cell that can differentiate into all cell types of the adult organism is known as pluripotent. Such cells are called embryonic stem cells in animals and meristematic cells in higher plants. A cell that can differentiate into all cell types, including the placental tissue, is known as totipotent. In mammals, only the zygote and subsequent blastomeres are totipotent, while in plants many differentiated cells can become totipotent with simple laboratory techniques. In cytopathology, the level of cellular differentiation is used as a measure of cancer progression. ""Grade"" is a marker of how differentiated a cell in a tumor is.