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1 A generalized quantitative antibody homeostasis model
1 A generalized quantitative antibody homeostasis model

... Starting with the expression of the surrogate light chain B cells go through several cycles of activation, proliferation, survival, and antibody production, all governed by BCR engagement. The generalized quantitative model (GQM) assumes that in order to deliver functional signals to the B cells the ...
Elodea Osmosis Lab
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... solute concentration is called osmosis. This movement of water, in certain circumstances, can be harmful to cells. It can result in severe cell water loss when living cells are placed into an environment where the solute concentration outside the cell is much higher than inside the cell. This is cal ...
File
File

...  The bicoid mRNA is highly concentrated at the anterior end of the embryo  After the egg is fertilized, the mRNA is translated into Bicoid protein, which diffuses from the anterior end this results in a gradient of bicoid protein  Injection of bicoid mRNA into various regions of an embryo result ...
Functional Complexity Associated with the EspB Molecule of
Functional Complexity Associated with the EspB Molecule of

... Human red blood cells (Type B) were washed with PBS three times and suspended in PBS to a final concentration of 3% (v/v). RBC was then plated on wells of 12-well plates (700 l/well) coated with 1% poly-lysine for 20 min at 37 C followed by two PBS washes and incubated in DMEM medium without pheno ...
Suppression of a mitotic mutant by tRNA
Suppression of a mitotic mutant by tRNA

... to 20°C, and their increase in cell number was measured. Approximately two rounds of cell division occurred before the cease of cell number increase in the cultures of scn1 and scn2 (Fig. 1B). In addition, cell elongation was observed at 20°C (Fig. 1C). The average cell length of scn1 mutant cells a ...
THE CELL model: Activity 4.1 – Science / Biology Objective: On a
THE CELL model: Activity 4.1 – Science / Biology Objective: On a

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Chapter 6 Question 2 Activity: Prokaryotic Cell

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The Single ENTH-Domain Protein of Trypanosomes

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Chapter 3 Cells

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Atypical Regulation of a Green Lineage-Specific B
Atypical Regulation of a Green Lineage-Specific B

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Supporting Online Material for
Supporting Online Material for

... References ...
Differential requirement for OBF-1 during antibody
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Cells, diffusion and osmosis - Pearson-Global
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... In a tiny embryo, each cell has the ability to divide and form new cells, and these new cells are able to turn into any of the different kinds of cells that make up your body (Figure 2.1). Cells that can do this are called stem cells. By the time a baby is born, most of its cells have already become ...
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... CMV pathogenesis. Specifically, in this model, CD8 T cells appeared to be the principal antiviral effectors (Reddehase et al., 1985 ; for a review see Koszinowski et al., 1993). Upon adoptive transfer for pre-emptive cytoimmunotherapy of murine CMV disease in the immunocompromised host, antiviral CD ...
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... and mixed viable-nonviable cell preparations. Prior to initiation of the plasmolysis assays, the condition of viable and nonviable S. enteritidis cells was determined by using high-magnification phase-contrast microscopy and cell elongation-division. The plasmolysis assay was performed by injecting ...
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... growing cell ends, we examined the pattern of Sla2-GFP localization in the temperaturesensitive cell cycle mutants cdc10-129 and cdc25-22 (Mitchison and Nurse, 1985), which block before and after activation of bipolar growth, respectively. When shifted to the restrictive temperature, cdc10-129 cells ...
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Characterization of a brown Nostoc species from

... acetylene reduction occurred mainly in the light period (results not shown). Properties of the brown pigment ...
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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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