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abstract
abstract

... several attempts at preparing a cell made of 7 insulating sections separated by 6 ring-shaped metal electrodes. The parts were to be assembled by brazing. Since the attack of brazing material in alkali cells has been suspected many times17, we first exposed a sample of Ag-Cu brazing alloy18 to a 10 ...
Get cached PDF
Get cached PDF

... Thus we developed the ‘open-faced’ explant system (Keller et al., 1985a,b), in which the dorsal marginal zone (DMZ) of the Xenopus gastrula is explanted and cultured under conditions that expose to observation, video recording and experimental manipulation the deep mesodermal cells that drive conver ...
Betulinic Acid-induced Programmed Cell Death in
Betulinic Acid-induced Programmed Cell Death in

... revealed that cytotoxic responses can be mediated with other cell types (4 – 8), but a key observation remains the significant antitumor response with human melanoma carried in athymic mice (1) under experimental conditions yielding little or no toxicity. Accordingly, a question of great interest co ...
The Physiology of the Distal Tubules and Collecting Ducts
The Physiology of the Distal Tubules and Collecting Ducts

... The major role of aldosterone is to increase extracellular volume in response to volume depletion signaled by the renin-angiotensin system. Aldosterone plays an role in K+ homeostasis: – High extracellular K+ stimulates aldosterone secretion – K+ secretion is linked to aldosterone-regulated Na+ reab ...
as a PDF
as a PDF

... reporter genes were cotransfected into HeLa cells, together with constitutively expressed estrogen receptor (ER) constructs, demonstrate that activation of the transcription of the reporter genes by epidermal growth factor (EGF) and by cholera toxin with 3-isobutyl-1-methyl-xanthine, which elevate c ...
iGCSE revision notes topic 2 (Part 1) Cells, animal
iGCSE revision notes topic 2 (Part 1) Cells, animal

... Animal nutrition Assimilation: Define assimilation as movement of digested food molecules into the cells of the body where they are used, becoming part of the cells Describe the role of the liver in the metabolism of glucose (glucose → glycogen) and amino acids (amino acids → proteins and destructi ...
The role of fibroblast growth factor in early Xenopus development
The role of fibroblast growth factor in early Xenopus development

... reveals that this binding is attributable to a receptor of relative molecular mass about 130 xlO 3 . The receptor is present both in the marginal zone, which responds to the signal in vivo, and in the animal pole region, which is not induced in vivo but which will respond to HBGFs in vitro. In the e ...
Inhibition of Cell Growth by Lovastatin Is Independent of ras Function
Inhibition of Cell Growth by Lovastatin Is Independent of ras Function

Biofilm-grown Mycoplasma mycoides subsp. mycoides SC
Biofilm-grown Mycoplasma mycoides subsp. mycoides SC

... Please cite this article as: McAuliffe, L., Ayling, R.D., Ellis, R.J., Nicholas, R.A.J., Biofilm-grown Mycoplasma mycoides subsp. mycoides SC exhibit both phenotypic and genotypic variation compared with planktonic cells, Veterinary Microbiology (2007), doi:10.1016/j.vetmic.2007.11.024 This is a PDF ...
Creating a Factory
Creating a Factory

... The NUCLEUS (or the executive department) runs the cell factory and controls all cell activity. It determines what proteins are to be made and stores all the plans for any proteins that the cell currently makes or has made in the past. Cytoplasm is the gelatin-like material that is found inside the ...
Chapter 6 A Tour of the Cell Multiple-Choice Questions
Chapter 6 A Tour of the Cell Multiple-Choice Questions

... A) plant cells are capable of having a much higher surface-to-volume ratio than animal cells. B) plant cells have a much more highly convoluted (folded) plasma membrane than animal cells. C) plant cells contain a large vacuole that reduces the volume of the cytoplasm. D) animal cells are more spheri ...
Lung Cancer and EGFR Exon 19 Deletion Mutations This material
Lung Cancer and EGFR Exon 19 Deletion Mutations This material

... After a while, your cancer cells may stop responding to the drug(s). This means your cancer may start to grow again. Your doctor will do regular checkups to watch for this. If the cancer starts to come back, your doctor can try another drug or treatment. What is EGFR? EGFR is the name of both a gene ...
PDF
PDF

... activation of HSC clones is successive and stochastic (Abkowitz et al., 1990). In addition, HSCs in G0 possess much higher long-term engraftment ability, indicating that phenotypically similar stem cells can differ in their function depending on the exact time-point when they are assayed (Fleming et ...
No Slide Title
No Slide Title

... The molecular basis for the electrophoretic behavior was elucidated by Ingram who separated tryptic peptides by 2D paper electrophoresis and chromatography. This protocol separates the peptides produced by cleavage at the lys and arg residues by both charge and solubility in the aqueous-organic solv ...
Role for a bidentate ribonuclease in the initiation step of RNA
Role for a bidentate ribonuclease in the initiation step of RNA

... which RNAi had been initiated in vivo by transfection with doublestranded RNA (dsRNA). We ®rst investigated whether the RISC enzyme, and the enzyme that initiates RNAi through processing of dsRNA into 22-nucleotide sequences, are distinct activities. RISC activity could be largely cleared from extra ...
5bacteria 1
5bacteria 1

... Bacteria, which outnumber all eukaryotes combined, differ from eukaryotes in at least seven ways. Bacteria are prokaryotes. Unlike eukaryotes, prokaryotes lack a cell nucleus and all other membrane-bound organelles. They do contain ribosomes, granules of stored nutrients, enzymes, and certain intern ...
Plant Communication PPT
Plant Communication PPT

... The Discovery of Plant Hormones • Any response resulting in curvature of organs toward or away from a stimulus is called a tropism • In the late 1800s, Charles Darwin and his son Francis conducted experiments on phototropism, a plant’s response to light ...
Modelling and parameter estimation of bacterial growth with
Modelling and parameter estimation of bacterial growth with

... This dynamic model can be used to predict bacterial growth even if the environment changes during the lag. Important simplifications were that νb=µmax and q0=const were assumed for the different environments. These simplifications are based on regressions carried out using large datasets. The assump ...
CELL
CELL

... many different organs, such as the heart, lung, and kidney, with each organ performing a different function. •  Cells also have a set of "little organs," called organelles, that are adapted and/or specialized for carrying out one or more vital functions. •  Membrane-bound organelles are found only i ...
T Cell Proliferation Induced by Autologous Non
T Cell Proliferation Induced by Autologous Non

... cultured with 50 ␮g/ml mAb to ␣v␤3 or ␣v␤5 integrin (Chemicon International, Temecula, CA) or with control anti-TNP mAb for 1 h before induction of apoptosis and washed from the cell preparation before initiation of the AMLR culture. The proliferative response of T cells to 50 ng/ml phorbol dibutyra ...
Embryo_seedling
Embryo_seedling

... plants? Some plants require a cold period to break seed dormancy, and others require damage to the seed coat to allow water to enter. In the walnut (Juglans regia) the nut has to decompose on the forest floor for two years, before its hard seed coat is weakened enough to allow water in and the germi ...
Protocol for staining cells with organelle
Protocol for staining cells with organelle

1749-8104-8-5 - Cambridge Repository
1749-8104-8-5 - Cambridge Repository

... Keywords: Intrinsic program, Lumen, Neuroepithelial polarity, Neural tube, Zebrafish ...
Overexpression of vinculin suppresses cell motility in BALB/c 3T3 cells
Overexpression of vinculin suppresses cell motility in BALB/c 3T3 cells

Slide 1
Slide 1

... • Ribosomes on the surface of the rough ER – Produce proteins that are secreted, inserted into membranes, or transported in vesicles to other organelles ...
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Amitosis

Amitosis (a- + mitosis) is absence of mitosis, the usual form of cell division in the cells of eukaryotes. There are several senses in which eukaryotic cells can be amitotic. One refers to capability for non-mitotic division and the other refers to lack of capability for division. In one sense of the word, which is now mostly obsolete, amitosis is cell division in eukaryotic cells that happens without the usual features of mitosis as seen on microscopy, namely, without nuclear envelope breakdown and without formation of mitotic spindle and condensed chromosomes as far as microscopy can detect. However, most examples of cell division formerly thought to belong to this supposedly ""non-mitotic"" class, such as the division of unicellular eukaryotes, are today recognized as belonging to a class of mitosis called closed mitosis. A spectrum of mitotic activity can be categorized as open, semi-closed, and closed mitosis, depending on the fate of the nuclear envelope. An exception is the division of ciliate macronucleus, which is not mitotic, and the reference to this process as amitosis may be the only legitimate use of the ""non-mitotic division"" sense of the term today. In animals and plants which normally have open mitosis, the microscopic picture described in the 19th century as amitosis most likely corresponded to apoptosis, a process of programmed cell death associated with fragmentation of the nucleus and cytoplasm. Relatedly, even in the late 19th century cytologists mentioned that in larger life forms, amitosis is a ""forerunner of degeneration"".Another sense of amitotic refers to cells of certain tissues that are usually no longer capable of mitosis once the organism has matured into adulthood. In humans this is true of various muscle and nerve tissue types; if the existing ones are damaged, they cannot be replaced with new ones of equal capability. For example, cardiac muscle destroyed by heart attack and nerves destroyed by piercing trauma usually cannot regenerate. In contrast, skin cells are capable of mitosis throughout adulthood; old skin cells that die and slough off are replaced with new ones. Human liver tissue also has a sort of dormant regenerative ability; it is usually not needed or expressed but can be elicited if needed.
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