• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
D. Research Support
D. Research Support

... focused on improving the quality of data that was being published in this area. For many years most researchers were only taking a qualitative approach in virtually all applications of proteomics. With my background in biochemistry and cell biology though, I advocated that we could do much more. My ...
Cell Structure and Functions
Cell Structure and Functions

... The invention of the light microscope differed from earlier microscopes as it a. did not use an oil lamp for lighting. b. used more than one lens. c. focused light up through a specimen. d. featured a tube with an eyepiece. Though cells in living things are put together in many ways to form differen ...
Biologie des ARN/RNA Biology
Biologie des ARN/RNA Biology

... RNAi is the process by which small RNAs, either originating from exogenous or endogenous sources, can modulate gene expression, typically by causing the degradation of complementary cellular RNAs. ...
fibulins: a versatile family of extracellular matrix proteins
fibulins: a versatile family of extracellular matrix proteins

... The identification of a new family of ECM proteins usually generates questions about their specific functions and their associations with different tissue compartments as an initial approach to understanding their biological role. Information regarding the tissue deposition of all of the fibulin iso ...
Mitochondria & Chloroplasts
Mitochondria & Chloroplasts

... 100s to 1000s of individual mitochondria number of mitochondria is correlated with aerobic metabolic activity ...
BS2050 Principles
BS2050 Principles

... Hormones have a diversity of chemical structure and size ranging from the glycoprotein hormones (LH, FSH, hCG, TSH), larger polypeptides (insulin, ACTH, Gastrin, CRH), smaller modified peptides (TRH, GnRH), the lipophilic steroid hormones (testosterone, oestradiol, cortisol , aldosterone), hormones ...
Neutrophil trails guide influenza-specific CD8+ T cells in the airways
Neutrophil trails guide influenza-specific CD8+ T cells in the airways

... recise trafficking of activated effector T cells to infection sites is key to their protective functions against a virus. Infected tissues often harbor an array of diverse inflammationinduced chemokines that guide effector T cell migration and retention. The predominant view in the field is that eff ...
Idh paper revised II - G3: Genes | Genomes | Genetics
Idh paper revised II - G3: Genes | Genomes | Genetics

... This group was assigned to E93 when it was found that one of its alleles ("E931") is associated with a nonsense mutation at codon 995 of the E93 A isoform, near the 3' end of the E93 coding sequence. The other two alleles in this complementation group ("E932" and "E933") do not show changes in the E ...
Chapter 27
Chapter 27

...  Bacterial flagella are composed of a motor, hook, and filament  Many of the flagella’s proteins are modified versions of proteins that perform other tasks in bacteria  Flagella likely evolved as existing proteins were added to an ancestral secretory system  This is an example of exaptation, whe ...
Nuclear and nucleolar targeting of human ribosomal protein
Nuclear and nucleolar targeting of human ribosomal protein

... Figure 1 Establishment of a FLAG-tagged RPS25 expression and detection system. (a) Structure of the plasmid for the expression of a FLAG-tagged RPS25 (FL-RPS25). Abbreviations; CMV: cytomegalovirus promoter, FLAG: the FLAG epitope-encoding region (in the stippled box). The cDNA for RPS25 was a compo ...
DCE
DCE

... • the fundamental communications mechanism ...
Rac1 accumulates in the nucleus during the G2 phase of the cell
Rac1 accumulates in the nucleus during the G2 phase of the cell

... GFP-Rac1L61 was distributed in a pattern similar to that of wild-type GFP-Rac1 in each of the cell types. Moreover, GFP extended with the 11 C-terminal amino acids of Rac1 showed a higher degree of nuclear localization relative to the fulllength protein in all cell lines studied. These observations ...
DAZL is essential for stress granule formation
DAZL is essential for stress granule formation

... components are overexpressed (Anderson and Kedersha, 2008). The mRNPs of SGs are in a dynamic equilibrium with polysomes (Kedersha et al., 1999; Kedersha et al., 2000). In this regard, SGs have been proposed to function as a transient place of mRNP remodeling for storage, degradation or reinitiation ...
Comparison of Properties of Medial Entorhinal Cortex
Comparison of Properties of Medial Entorhinal Cortex

... different locations, we performed different analyses. In the first analysis, we used the minimum current amplitude which elicited at least 20 spikes during the 1 s pulse in each cell. In this method, numbers of induced spikes were similar, while the current amplitudes were different from cell to cel ...
regulation of blood glucose dr abdelaziz
regulation of blood glucose dr abdelaziz

... • glucose is the only nutrient used by the brain, retina and germinal epithelium of the gonads • Too high blood glucose level produce many harmful effects such as; 1. Glucose can exert a large amount of osmotic pressure in the ECF that leads to cellular dehydration 2. Loss of glucose in urine 3. Osm ...
Intracellular accumulations 2014-2015Dr.Ban Jumaa Intracellular
Intracellular accumulations 2014-2015Dr.Ban Jumaa Intracellular

... Free fatty acids from adipose tissue or ingested food are normally transported into hepatocytes. In the liver, they are esterified to triglycerides, converted into cholesterol or phospholipids, or oxidized to ketone bodies. Release of triglycerides from the hepatocytes requires apoproteins to form l ...
The Arabidopsis Exocyst Complex Is Involved in Cytokinesis and
The Arabidopsis Exocyst Complex Is Involved in Cytokinesis and

... bait and prey and weakly interacted as bait with SEC15b. On the other hand, the C-terminal domain of EXO84b exhibited weak interactions with itself and, as bait, with SEC15b (Figure 1A). We further demonstrated the association of EXO84b with other exocyst subunits by coimmunoprecipitation in transge ...
BS Biology:  Pre-Optometry
BS Biology: Pre-Optometry

... Optometrists examine people's eyes to diagnose vision problems and eye diseases. They prescribe eyeglasses and contact lenses, treat eye diseases, and provide vision therapy. After completing a bachelor’s degree, optometrists attend a college of optometry for four years to earn a Doctor of Optometry ...
Quantification of gap junction selectivity
Quantification of gap junction selectivity

... To understand why the mammalian genome includes 20 or more connexin genes, the functional differences between the gap junctions that they form must be appreciated. Since their discovery, much has been learned about gap junctions in a broad sense, but their functional and regulatory differences are s ...
Jeopardy
Jeopardy

... This characteristics defines a structure that has Both hydrophobic and hydrophilic properties. ...
Origin, Early Patterning, and Fate of the Mouse Epiblast
Origin, Early Patterning, and Fate of the Mouse Epiblast

... of the blastocyst are predominantly made of descendants from either one or the other two-cell stage blastomere. Labeling studies showed that the clonal boundary between descendants of the two-cell blastomeres is maintained at least up to the early blastocyst stage.12,13 What can account for the diff ...
as Adobe PDF - Edinburgh Research Explorer
as Adobe PDF - Edinburgh Research Explorer

... Fig. 2. Fgf10 and Fgf3/SOX3 expression in the forming infundibulum and collar zone. (A-C)Anterior fp subpopulations (A and P) used in targeted fate mapping (A) were explanted and cultured in vitro (B) for 30 hours (E2.5 equivalent). The anterior (prosencephalic neck)-derived population expresses Fg ...
Identification of a Cell Cycle-Related Cene, Cyclin, in Nicotiana
Identification of a Cell Cycle-Related Cene, Cyclin, in Nicotiana

... by phytohormones. These include protoplast cultures and cell suspensions that can be synchronized during cell-cycle progression (Nagata et al., 1992). &o, epidermal tobacco tissues may be confined in vitro to produce, selectively, flowers, vegetative buds, roots, or calli in response to exogenous ph ...
lee
lee

... of corneal epithelial cells leads to 10- to 100-fold increases in P. aeruginosa adherence and rendered the cornea susceptible to infection (14, 28). Apical addition of P. aeruginosa to the apical surfaces of MDCK and corneal epithelial cells induced cytotoxicity as expanding foci of dying cells, ind ...
FGF-dependent midline-derived progenitor cells in hypothalamic
FGF-dependent midline-derived progenitor cells in hypothalamic

... Fig. 2. Fgf10 and Fgf3/SOX3 expression in the forming infundibulum and collar zone. (A-C) Anterior fp subpopulations (A and P) used in targeted fate mapping (A) were explanted and cultured in vitro (B) for 30 hours (E2.5 equivalent). The anterior (prosencephalic neck)-derived population expresses Fg ...
< 1 ... 218 219 220 221 222 223 224 225 226 ... 1231 >

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.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report