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fine structure and morphogenic movements in the
fine structure and morphogenic movements in the

... flask- and wedge-shaped cells of entoderm and mesoderm. The distal surfaces of these cells bear microvilli which are underlain with an electron-opaque layer composed of fine granular material and fibrils. The dense layer and masses of vesicles proximal to it fill the necks of the cells. In flask cel ...
Animal Cell 3-Part Cards - Montessori for Learning
Animal Cell 3-Part Cards - Montessori for Learning

... 2. As an introductory lesson, students can match the correct picture to the control card and then find the label and description that matches the correct picture. *** Students can actually place the picture on top of the picture, description on top of the description and label on top of the label in ...
Somatic Cell Genealogies and Differentiation
Somatic Cell Genealogies and Differentiation

... (i) A somatic cell tree starts from the zygote and ends with present daynormal or neoplastic cells. (ii) In between are ancestors and dead ends, which functionally correspond to stem and nonstem cells. (iii) The human colon is approximately 5 ft long and composed of about 15 million clonal units cal ...
Bacteria Lab
Bacteria Lab

... Bacteria Lab Background Information Bacteria are among the smallest cells on earth. These tiny cells lack membranebound organelles such as a nucleus. Because bacteria have no nucleus, they are prokaryotes, and they are classified into kingdom Monera (Prokaryotae). Bacteria can be identified based on ...
Lecture 15 Cloning in Mammalian Cells 1. Eukaryotic expression
Lecture 15 Cloning in Mammalian Cells 1. Eukaryotic expression

... nucleic acids. PolyFect Reagent assembles DNA into compact structures that bind to the cell surface and are taken into the cell by nonspecific endocytosis. The reagent buffers the pH of the endosome, leading to pH inhibitition of endosomal nucleases, which ensures stability of PolyFect–DNA complexes ...
Pulsed Radiofrequency (PRF) Increase Biomarkers Expression in
Pulsed Radiofrequency (PRF) Increase Biomarkers Expression in

Osmosis Experimental Design Lab
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C 3 Cellular Structure and Function

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(a) Gram-positive bacteria
(a) Gram-positive bacteria

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... A review of algal cytology and morphology summarized by Smith (1950), Fritsch (1965), Lee (2008), and Graham et al. (2009) shows that all but two of the 14 theoretically possible variants are represented by one or more algal species. For example, the unicellular multinucleate variant with determinat ...
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Signal Requirements for the Generation of CD4+ and CD8+ T

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PDF

... via the use of various small-molecule inhibitors and cytokines that include 2i/LIF, among others. Finally, this ‘2i’ inhibition strategy has also proven to be highly effective in promoting nuclear reprogramming of somatic cells into induced pluripotent stem cells (iPSC), in part through conditioning ...
Differentiation of Mesenchymal Stem Cells Into Dopaminergic
Differentiation of Mesenchymal Stem Cells Into Dopaminergic

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Mutants of the Membrane-binding Region of Semliki Forest Virus E2
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The Prokaryotes: Eubacteria and Archaea

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TKRP125, a kinesin-related protein involved in the centrosome
TKRP125, a kinesin-related protein involved in the centrosome

... endosperm cells resulted in the disruption of phragmoplast microtubules that extended from the irradiated site. The phragmoplast in plasma membrane-permeabilized endosperm cells of Haemanthus incorporated exogenously applied tubulin at the equatorial region (Vantard et al., 1990), an indication that ...
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Distribution of P2X receptors in the rat adrenal gland

... have been already implicated from functional studies (Niitsu 1992). It is also possible that purines are involved in other cellular activities in addition to steroidogenesis and secretion from the cortical cells. P2X2 receptors were localized in the smooth muscle of blood vessels in the capsular reg ...
PDF
PDF

... embryos used for counting progeny of opq′, the contribution of micromere opq′ was inferred by comparing the pattern of cells arising from cell OPQ with that arising from cell OPQ′′, using the subtractive method of Zackson (1982). For this purpose, the OPQ blastomere was injected with TRDA and the OP ...
DNA Typing and Criminal Investigations
DNA Typing and Criminal Investigations

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Arabidopsis Formin AtFH6 Is a Plasma Membrane
Arabidopsis Formin AtFH6 Is a Plasma Membrane

... WW domains (Chan et al., 1996; Chang et al., 1997; Watanabe et al., 1997). The FH2 domain of BNI1p was recently shown to nucleate actin filaments and to associate with the barbed end of growing actin filaments (Pruyne et al., 2002; Sagot et al., 2002b). Although FH proteins are required for organiza ...
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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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