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A Geminivirus lnduces Expression of a Host DNA Synthesis Protein
A Geminivirus lnduces Expression of a Host DNA Synthesis Protein

... AL1 and AL3 antigens were both detected in nuclei of infected leaf cells (Figures 28 and 2C). No material that cross-reacted with either antiAL1 (Figures 2A and 2D) or antiAL3 antibodies (data not shown) was detected in mock-infected leaf tissue. Xylem, which is dead at maturity and lacks nuclei, au ...
March 2017 - Human Metabolome Technologies
March 2017 - Human Metabolome Technologies

... Identifying and understanding cancer metabolism is a rapidly evolving opportunity for cancer treatment. Tumorigenesis is associated with unexpected alterations in cellular metabolism that arise from the need for cancer cells to generate the energy and biomass that is necessary to maintain cell growt ...
Positioning the Flagellum at the Center of a Dividing Cell To
Positioning the Flagellum at the Center of a Dividing Cell To

... he complexity of cellular organization and dynamics has long been recognized in eukaryotes. However, it is only in the last decade that such complexity has started to be documented for bacteria (1). One example for such organization is cellular polarity with concomitant anisotropic cell division, wh ...
RADIOACTIVE PHOSPHORUS IN STUDIES ON THE
RADIOACTIVE PHOSPHORUS IN STUDIES ON THE

... P82 containing substrate differed from desoxyribonucleoprotein. Since p82 first appears in this nucleoprotein in mitotic cells and does not appear in DNA until some time later, this material was considered to be the precursor of DNA in such cells. Earlier experiments had shown that in resting cells ...
CELL SCAVENGER HUNT
CELL SCAVENGER HUNT

... to be assembled. It acts like a small workbench for the cell to make proteins on. Proteins are vitally important to making the whole human body. So, these are the mini-factories that put the pieces together into something useable. The shop acts like the ribosome of the school. In shop, you assemble ...
Biology 1
Biology 1

... • Biophilia ...
Photolabeling of Proteins and Cells
Photolabeling of Proteins and Cells

... Schizosaccharomyces pombe by RNA interference (RNAi). In Caenorhabditis elegans and Drosophila, which lack DNA methylation, transposons and repeats are also a target of RNAi (28, 29). In organisms that have DNA methylation, H3mK9 is both interpreted by DNA methyltransferases (22, 24 ) and reinforced ...
J. Keith Joung, MD, PhD - Massachusetts General Hospital
J. Keith Joung, MD, PhD - Massachusetts General Hospital

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LOW CALCIUM UNMASKS A PREFERENTIAL INVOLVEMENT OF

... activation of SKCa plays a predominant role (possibly because of a higher level of expression of this channel in the guinea-pig endothelial cells). However, under lowcalcium conditions (0.5 mM Ca2+), IKCa channels are preferentially activated. This is consistent with the reported two- to five-fold h ...
CELL PARTS Chapter 4 - Forest Hills School District
CELL PARTS Chapter 4 - Forest Hills School District

... Image from: http://www.mccc.edu/~chorba/celldiagram.htm ...
Cellular Transport
Cellular Transport

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Down-Regulation of DNA Topoisomerase IIα Leads to Prolonged
Down-Regulation of DNA Topoisomerase IIα Leads to Prolonged

... showed that paclitaxel (Taxol) influenced the expression of several cell cycle regulators. In particular, after 24-h drug treatment, the cyclin-dependent kinase inhibitor p21waf1/cip1/sdi1 (CDKN1A) was up-regulated, as was another Cdk1 modulator, 14-3-3␴. In contrast, Cdk1 (also known as cdc2 or p34 ...
The Cytoskeleton of Nerve Cells in Historic Perspective
The Cytoskeleton of Nerve Cells in Historic Perspective

... Thus, just after being placed for a short period at the very center of neuroscience theory, the neurofibrils went into relative obscurity. Nevertheless, debate persisted because even if their existence as real cellular components was tentatively granted, the question of their possible functions rema ...
File - Lepore`s Life and Health Science Corner
File - Lepore`s Life and Health Science Corner

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the Endoplasmic Reticulum CD1d1 with Cellular Phospholipids
the Endoplasmic Reticulum CD1d1 with Cellular Phospholipids

... phosphatidylinositol-glycans are not V␣14J␣15 natural T cell Ags. Therefore, we predict that cellular lipids occlude the hydrophobic Ag-binding groove of CD1 during assembly until they are exchanged for a glycolipid Ag(s) within the recycling compartment for display on the plasma membrane. In this m ...
Success Criteria – Multicellular Organisms 2. Stem cells and
Success Criteria – Multicellular Organisms 2. Stem cells and

... 22. Know that most characteristics are coded for by more than one gene, and are said to be polygenic. 23. Know that most features of an individual phenotype are polygenic and show continuous variation. 24. Carry out a monohybrid cross from parents through to F2 generation. 25. Know that if a homozyg ...
Receptor protein tyrosine phosphatase μ
Receptor protein tyrosine phosphatase μ

... based on transfection of normally non-adherent Sf9 cells with mutant constructs of RPTPμ incorporating cytoplasmic GFP tags. All of the ectodomain mutants tested lacked the adhesive activity of the wild-type ectodomain [5]. Does the high level of conservation at the adhesive interface indicate that ...
Reverse Engineering Models of Cell Cycle Regulation
Reverse Engineering Models of Cell Cycle Regulation

... hormones) to see if there are good ‘reasons’ why they may or may not want to proceed with mitotic reproduction.13 At the G2→M checkpoint, cells verify if DNA replication has finished properly.14 At the metaphase checkpoint, a cell makes sure that all its chromosomes are properly aligned on the mitot ...
The D-Type Alfalfa Cyclin Gene cycMs4 Complements
The D-Type Alfalfa Cyclin Gene cycMs4 Complements

... derived from somatic alfalfa embryos was hybridized with a radiolabeled cDNA fragment. The longest clone, termed cycMs4, contained an insert of 1857 bp (Figure 2). The open reading frame of the previously isolated cDNA could be extended by 348 bp. Severa1 in-frame stop codons upstream of the first p ...
Unique Eomes+ NK Cell Subsets Are Present in Uterus
Unique Eomes+ NK Cell Subsets Are Present in Uterus

... Decidual and uterine natural killer (NK) cells have been shown to contribute to the successful pregnancy both in humans and mice. NK cells represent “cytotoxic” group 1 innate lymphoid cells (ILCs) and are distinct from the recently described “helper” ILC1. Here, we show that both in humans and mice ...
The Unexpected Control Behind Uncontrolled Growth 1 The
The Unexpected Control Behind Uncontrolled Growth 1 The

... cancerous tissue, as long as it has not spread to other places in the body. However, when it has spread, more drastic, blanket treatments must be utilized. Doctors must resort to such treatments with metastatic cancer because they have the ability to reach various parts of the body all at once. How ...
Gram stain
Gram stain

... Although the thin peptidoglycan layer of the gram-negative envelope is dehydrated, the crystal violet-iodide complex can escape through the large pores that remain. The complex is eventually washed away, leaving colorless, unstained cells, unlike gram-positive cells which appear purple at this step ...
Homeostasis - SchoolRack
Homeostasis - SchoolRack

... therefore, a loss of turgor pressure • “plasmo” = cytoplasm • “lysis” = splitting ...
qnsrbio
qnsrbio

... The plan is to describe briefly some theoretical foundations that bring a new orientation to the role of surfaces and multiple 3-spaces at the quantum scale but also at macroscopic scales and in particular for biological systems. The basis for this approach, called Topological Process Dynamics or To ...
The organic anion transport inhibitor, probenecid, inhibits the
The organic anion transport inhibitor, probenecid, inhibits the

... cold (0-4 °C) M & S culture medium containing 10 mM Hepes (pH7.0) were electroporated (PG 200 Progenetor II, Hoefer Scientific Instruments) in the presence of l m g m l " 1 LY-CH (±probenecid) by a single electrical pulse (t=lms) with a field strength equal to 1250Vcm" 1 (capacitance=220jiF). During ...
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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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