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Accurate cell segmentation in microscopy images using membrane
Accurate cell segmentation in microscopy images using membrane

... by misspecifications of the cell region to be divided or by oversegmentation (Fig. 1A and B). Similarly, popular deformable model approaches such as geodesic active contours (Caselles et al., 1997), which detect cell boundaries by minimizing a predefined energy functional, can result in poor boundar ...
Size evolution in microorganisms masks trade-offs
Size evolution in microorganisms masks trade-offs

... potentially at the expense of other biological functions such as defence or resource acquisition (see [2] for a review and [10]). Therefore, optimizing the maximum per capita growth rate (hereafter called mmax) might be detrimental to other traits, such as the ability to survive in low-resource cond ...
Goblet Cells Contribute to Ocular Surface Immune Tolerance
Goblet Cells Contribute to Ocular Surface Immune Tolerance

... CD11c+ cells in the epithelium have a morphology resembling Langerhan’s cells with the dendrites of some cells surrounding the openings of cytokeratin 7 (K7) positive GCs (Figure 1F, top). Plumper CD11b+ cells with either an oval or shorter dendritic morphology (asterisk) were primarily located in t ...
Document
Document

... During the M phase of cell division, the chromatids are condensed by proteins called? (a) cohesins (b) condensins (c) cytochromes (d) selectins (e) None of the above ...
IN VITRO L. MADRASPATENSIS
IN VITRO L. MADRASPATENSIS

... employed to assess the cytotoxic potential of the plant extract under study. The results of in vitro cytotoxicity study depicted that the methanol extract of Phyllanthus maderaspatensis possess good cytotoxic potentials at higher concentration (93.62% of inhibition observed in 1000 µg/ml). The activ ...
osb_week03_Lab3
osb_week03_Lab3

... experiment. Since this is the first hypothesis testing we have done, you can work together and/or ask the instructor for assistance.) Remember that we are comparing the solutions, not the eggs! To begin the experiment (after your hypothesis and predictions have been written) carefully weigh each egg ...
Inducibility and Expression of Microvascular
Inducibility and Expression of Microvascular

... of vessels; Figs 1,2a), also consistent with previous findings in endothelial cells of the SVP in normal skin. Perilesional Skin At the light microscope level, perilesional skin was generally indistinguishable from uninvolved skin in terms of vascularization and density of dermal leukocytes. The ret ...
Male Germ Line Development in Arabidopsis
Male Germ Line Development in Arabidopsis

... The 2:2 segregation of tetrads confirmed that both duo mutations act gametophytically. The normal vegetative development, aberrant pollen phenotype, lack of male transmission, and normal female transmission defined both duo mutations as male specific, indicating that these mutations are required spe ...
Apoptosis (Programmed Cell Death) and
Apoptosis (Programmed Cell Death) and

... Am J Pathol ...
Dr. P K Tiwari
Dr. P K Tiwari

... Dr. P. K. Tiwari (born on October 15, 1956) did B. Sc. (1977) from Gorakhpur University and M. Sc. (1979) and Ph. D. (1985) from Banaras Hindu University. He served as Assistant Professor (Life Sciences) at Manipur University, Imphal in 1986. He was a research associate at the Centre for Biotechnolo ...
Advanced
Advanced

... occurs when the concentration of the two sides of the membrane are different. (“Cell Transport”, nd) There are water channel proteins called aquaporins in cell membranes that allow water to pass through them. During osmosis, water moves through these aquaporins until equilibrium is reached. (Miller ...
Male Germ Line Development in Arabidopsis
Male Germ Line Development in Arabidopsis

... The 2:2 segregation of tetrads confirmed that both duo mutations act gametophytically. The normal vegetative development, aberrant pollen phenotype, lack of male transmission, and normal female transmission defined both duo mutations as male specific, indicating that these mutations are required spe ...
Intercellular signalling and the multiplication of prokaryotes
Intercellular signalling and the multiplication of prokaryotes

... on the apparently correct assumption that a test tube containing but one viable cell will in due time  display visible growth or turbidity. While it is already clear that axenic bacterial cultures do not  remotely represent a statistically homogeneous population (Davey & Kell, 1996; Kell et al., 199 ...
ChChd3, an Inner Mitochondrial Membrane Protein, Is
ChChd3, an Inner Mitochondrial Membrane Protein, Is

... using Analyze (Mayo Foundation) and the surface-rendering graphics of Synu (National Center for Microscopy and Imaging Research) as described by Perkins et al. (29). These programs allow one to step through slices of the reconstruction in any orientation and to model and display features of interest ...
Vascular Smooth Muscle Cells activation revealed by quantitative
Vascular Smooth Muscle Cells activation revealed by quantitative

... [13]. Recently, in an in vivo rat carotid injury model, overexpression of Smad3 produced an increase in phosphorylated extracellular signal-regulated kinases (ERK) mitogenactivated protein kinases (MAPK) as well as increased VSMC proliferation [14]. Several MS-based quantification methods have been ...
AGI June 41/6 - American Journal of Physiology
AGI June 41/6 - American Journal of Physiology

... provide more accessible binding sites for microorganisms because they extend up to 500 nm from enterocyte plasma membranes and 20–30 nm from M cell membranes (10). They would thus be the first structures encountered by intestinal pathogens (25). Integral membrane mucins such as those of the enterocy ...
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Down syndrome
Down syndrome

... What causes Down Syndrome? Down syndrome occurs because of an abnormality characterized by an extra copy of genetic material on all or part of the 21st chromosome. Every cell in the body contains genes that are grouped along chromosomes in the cell's nucleus or center. There are normally 46 chromos ...
Update on the Pathogenesis and Immunotherapy of Esophageal
Update on the Pathogenesis and Immunotherapy of Esophageal

... reported in Belgium (23) and Brazil (24). In Japan HPV may be absent (25) or infrequent, and what is more surprising HPV has been found even in DNA from non-cancerous esophageal mucosa (26). I recently reported absence of HPV in a group of samples from Papua Guinea (27) and a a few cases from Peru, ...
Splenic Epstein-Barr Virus–Associated Inflammatory Pseudotumor
Splenic Epstein-Barr Virus–Associated Inflammatory Pseudotumor

... from the uninvolved splenic parenchyma (left) by a thin fibrous capsule (arrowheads). C, A dense lymphoplasmacytic infiltrate obscures the spindle cell component. The inflammatory infiltrate shows some multinucleated histiocytes (long arrows) and plasma cells containing Russell bodies (short arrows) ...
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Evolutionary basins of attraction and convergence in plants and

... As an organism evolves, its phenotype Some proteins present in the last different biochemical pathways. This will be limited among other things by common ancestor of plant and animal demonstrates that sometimes evolutionary the bounds of protein function. Certain lineages appear to have preadaptatio ...
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... 2: Living things reproduce  All living things die, so reproduction is necessary  2 types: Sexual two cells from different individuals unite to produce new cell (new individual) ...
Introduction to Dermatology
Introduction to Dermatology

... transferred to adjacent cells forming the Epidermal Melanin unit.  Small, unmelanized, clumped melanosomes are found in white skin Large melanized, dispersed melanosomes in dark skin ...
View Full Text-PDF
View Full Text-PDF

... Pichia anomala, Clavispora lusitaniae and Candida tropicalis. Among these strains Candida tropicalis was found to be efficient in aflatoxin binding. These forms are common residents of most of the fermented foods, which pave a new way for the decontamination of aflatoxin. ...
Principles behind plasmid purification - EURL-AR
Principles behind plasmid purification - EURL-AR

... 5 ml sample => 2 * 5 = 10 ml Ethanol (and 0,5 ml NaAc) p at 9.600 g for 30 minutes Then spin Carefully wash with 70 % EtOH and spin again for 2 minutes ...
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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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