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Brown and Goldstein: The Cholesterol Chronicles
Brown and Goldstein: The Cholesterol Chronicles

... statin treatment for heart attacks, Brown and Goldstein demonstrated how statins worked to regulate cholesterol levels in blood. Endo’s drug was designed to block the action of a key cholesterol-making enzyme, but Brown and Goldstein’s partnership proved that when people at risk for coronary heart d ...
Marker Evolution during the Development of the
Marker Evolution during the Development of the

... requires a precise description of the types present in the normal mammary gland. In order to evaluate the significance of the cell types present in cancers, the developmental evolution of the normal cell types is also important. We report here studies dealing with these two questions in the rat mamm ...
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... 7. Cell theory is one of the great unifying theories of biology / chemistry. MAIN IDEA: Prokaryotic cells lack a nucleus and most internal structures of eukaryotic cells. ...
Analyzing Red Blood Cell-Deformability Distributions
Analyzing Red Blood Cell-Deformability Distributions

... Blood Cells, Molecules, and Diseases (2002) 28(3) May/June: 373–384 doi:10.1006/bcmd.2002.0528 ...
Study Guide A
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... 7. Cell theory is one of the great unifying theories of biology / chemistry. MAIN IDEA: Prokaryotic cells lack a nucleus and most internal structures of eukaryotic cells. ...
chapter 4: tissues - Warner Pacific College
chapter 4: tissues - Warner Pacific College

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Independent Essay * Stem Cell Niches
Independent Essay * Stem Cell Niches

... during cortical neurogenesis. The lateral ventricles appeared to have grown in size and lined up with neural progenitor cells, indicating a substantial increase in the precursor population. In order to further determine if the activation of β-catenin had the capacity to control neural mammalian deve ...
Microfilaments Intermediate filaments
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... internal membranes that compartmentalize their functions  The basic structural and functional unit of every organism is one of two types of cells: prokaryotic or eukaryotic  Only organisms of the domains Bacteria and Archaea consist of prokaryotic cells  Protists, fungi, animals, and plants all c ...
Cell Structure Section 2 The Framework of the Cell
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Tumor Stem Cells and Malignant Cells, One and the Same
Tumor Stem Cells and Malignant Cells, One and the Same

... In environmental asymmetry, one hematopoietic stem cell niche and retains the stem cell identity, while the other enters a different environment favoring its differentiation (24). The first human leukemia-lymphoma cell lines were Burkitt’s lymphoma lines developed in 1963 (28). The most widely used ...
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Nature Rev.Mol.Cell Biol. 16

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Bubble Lab - PSUSDscienceresources
Bubble Lab - PSUSDscienceresources

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Protists
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... they are made of only one cell. Being made of only one cell, protists lack nerve and muscle cells, as well as tissues and organs. All protists are eukaryotes, organisms that have cells with a nucleus and organelles. Most unicellular protists are microscopic. Many are described as animal-like because ...
chapter 6: a tour of the cell
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SEMESTER I EXAM - Hudson City Schools / Homepage
SEMESTER I EXAM - Hudson City Schools / Homepage

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... With Dr. Rafael Ovalle, we are also investigating how oxidative drugs destroy fungal cell walls and developing analytic techniques to characterize the products of oxidation. Ovalle, R., C. Soll, F. Lim, C. Flanagan, T. Rotunda, and P.N. Lipke. 2001. Systematic analysis of oxidative degradation of po ...
Concert 96 Protein Screen - Thermo Fisher Scientific
Concert 96 Protein Screen - Thermo Fisher Scientific

... creates problems in cases where the gene of interest is toxic to bacterial cells. In these cases, expression of the toxic gene under uninduced conditions leads to selection of cells that express the lowest levels of the toxic gene. These cells are often unable to express high levels of the gene of i ...
Acridine orange staining of virus infected host cells to monitor
Acridine orange staining of virus infected host cells to monitor

Complement Receptor Type 1 (CD35) Mediates - Bio
Complement Receptor Type 1 (CD35) Mediates - Bio

... n recent years, several links have been revealed between innate and adaptive immunity (1, 2). One of the most important elements involved in such interactions is the complement system (3, 4). Several lines of evidence prove the role of the activation fragments of the third component (C3) and their r ...
Honey bees are predisposed to win-shift but can learn to win-stay
Honey bees are predisposed to win-shift but can learn to win-stay

... trials, they first visited a randomly ‘determined set of three cells. They were then allowed to freely choose between the six cells, with the contingencies encouraging either win-shift or win-stay behaviour. Previous research indicates that honey bees use spatial workin’g memory to discriminate prev ...
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Build your own 3-D Cell! - Mr. Lingley`s Wikispace

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ch7_sec2
ch7_sec2

... • Some proteins that a cell manufactures are needed outside the cell that makes them. • Proteins that are sent outside the cell are packaged in vesicles. Vesicles are small, membrane-bound sacs that enclose the proteins and keep them separate from the rest of the cytoplasm. • The endoplasmic reticul ...
CK12 Cell Membrane
CK12 Cell Membrane

... to make sure the cell stays intact in this environment. What would happen if a cell dissolved in water, like sugar does? Obviously, the cell could not survive in such an environment. So something must protect the cell and allow it to survive in its water-based environment. All cells have a barrier a ...
6 Kingdoms - Denton ISD
6 Kingdoms - Denton ISD

... • The grouping of organisms into KINGDOMS is based on 3 factors: – 1. Cell Type – 2. Cell Number – 3. Feeding Type Notice these are three of the categories at the top of your chart. ...
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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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