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Meiotic long non-coding meiRNA accumulates as a dot at its genetic
Meiotic long non-coding meiRNA accumulates as a dot at its genetic

... did not overexpress meiRNA (electronic supplementary material, figure S4a), it formed a dot at its genetic locus when meiRNA was overexpressed from the strong nmt1 promoter (Pnmt1) (figure 4a,b), suggesting that the mechanism underlying meiRNA dot formation is functional in mitotic cells. Among thes ...
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cscope Specialized Cell Structures ppt notes

...  Flattened sacs called cisternae  Function:  Modifies and packages materials created in the cell for transport (inside or outside of the cell)  Analogy ...
Accepted version
Accepted version

... transcription of purified PCR-amplified DNA template using T7 RNA polymerase. CD1 mouse embryos at developmental stages 9.5, 10.5, 11.5 and 12.5 days post-coitum (dpc) were obtained from the Mary Lyon Centre, MRC Harwell, UK. Embryos were fixed overnight in 4% paraformaldehyde at 4 °C, stored in met ...
lecture notes-separation and purification-2
lecture notes-separation and purification-2

... - Organic solvents: penetrating the lipids and swelling the cells. e.g. toluene. e.g. Bacteria were treated with acetone followed by sodium dodecyl sulfate extraction of cellular proteins. ...
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Paleo-DNA RESEARCH The Paleo-DNA Lab has attracted visiting
Paleo-DNA RESEARCH The Paleo-DNA Lab has attracted visiting

... inhabit the nucleus of almost every cell in the human body. These chromosomes hold the vast bulk of genetic information that you've inherited from your parents. Nuclear DNA consists of three billion base pairs of DNA and an estimated 25,000 genes. Outside the nucleus, but still within the cell, lie ...
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... p53 ko p53 (+/+)  Assays on HCT116 cells with disrupted p53, suggest that the p53 cytostatic effects of ENN are mediated p21 by p53-dependent mechanisms. ...
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... Click on “Cell Membrane” in the model and read the information on the left. The cell membrane is like __________________ because it gives the cell support and _____________________ the cell from the outside environment. Also, just like _________________________, the cell membrane has openings that _ ...
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... one kind of the handed chemicals from the mixtures on the early Earth. Left-handed nucleotides are a poison because they prevent right-handed nucleotides linking up in a chain to form nucleic acids like RNA or DNA. Dr. Joyce refers to the problem as “original syn,” referring to the chemist’s terms s ...
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... (iii) A foreign body that induces the formation of antibodies in the body. (iv) The place where fertilization occurs in the female reproductive system. (v) An organization that looks after maternal and child welfare centres. [5] (b) State whether the following statements are true or false. If false, ...
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... A cell membrane is made of a double layer of phospholipid molecules. Each layer is a mirror image of the other layer. The structure is called a lipid bilayer. Located within the lipid bilayer of the cell membrane are proteins of different types. Each type of membrane protein plays a vital role in th ...
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Flow Cytometric Analysis of Ploidy in Immunohistochemically
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... eosin-stained histologic sections of MEM were examined, and one to three paraffin blocks from each neoplasm were selected for thick sectioning. A 50-ixm section from each block was placed into a glass centrifuge tube and deparaffinized according to the technique of Hedley and colleagues.8 Briefly, s ...
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... • Orchids are prized for their beautiful long lasting flowers exhibiting an incredible range of diversity in size, shape and colour. • It is very difficult to get orchids to breed sexually and to maintain the desired traits • Micropropagation has been so successful that orchids occupy a position as ...
APOPTOSIS: An overview
APOPTOSIS: An overview

... tissue reaction • Ladder-like DNA fragmentation • In vivo, individual cells appear affected ...
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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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