heterogeneous

Transfection of Green Fluorescent Protein into Human Adrenalcarcinoma Cells

... cells to draw conclusions. Second, we havenoticed heterogeneous subcellular localization of some of our fusion proteins inthe same set of transfected cells. Presumably, this is due to varying levels ofexpression of exogenous proteins typical of transiently transfected cells. Itwas therefore necessary to optimize ...

Isolation of Microorganisms

...e not known or when the microbes grow in a heterogeneous mixed culture in very small numbers only. Such experiments are now possible thanks to new techniques which have been developed recently (e.g., optical laser tweezers). This article outlines a novel method which, with the aid of...

Normalizing cDNA libraries using the EppendorfThermomixer

... seen before a diffuse background of heterogeneous cDNAs. The intensity of these bands decreases after several normalization steps (N1 and N2) have been carried out; conversely, the background of "low copy" cDNAs becomes more intense. This shows the success o...

Structural Analysis of Glycosylated Peptides in Complex Mixtures with Ion Trap MSn

...as an approximate molecular weight of 64 kDa and a heterogeneous distribution of N-linked glycoforms. The pur...s-to-charge ratios and charge states for the heterogeneous structures are listed in parentheses. The unglycosylated peptide was determined to have a mole...

Quantitative Measurement of Cell Proliferation Using the BrdU ELISA: A Comparison Between Colorimetric and Chemiluminescent Detection

...of fibroblasts whenestablishing cell cultures from heterogeneous tissuesamples, cultivation of epithelial cells in the presence ofcholera toxin is recommended. When added to normal cellculture medium, this toxin selectively suppresses thegrowth of fibroblasts. Accordingly, we cultured humanfibroblasts obtained fro...

In Situ Cell Death Detection Kit

...Typing of cells that are undergoing cell death (in heterogeneous populations) by double-staining procedures Typical samples that can be examined with the In Situ Cell Death Detection Kits include: Cell smear preparations Adherent cells cultured on chamber sl...

Enhanced siRNA Delivery and Long-term Gene Silencing

... may mimic the effects seen with heterogeneous disease causing alleles such as BRCA1, where only one of the alleles needs to be mutated to see a disease phenotype, and which often takes extended time to develop. p Silence...

RNase Activity in Mouse Tissue: Classification, Hierarchy, and Methods for Control

...ues, whereas a more functionally heterogeneous group of RNases are active in Group B tissues. For RNA isolation from tissues containing very high levels of RNase, we recommend TRI Reagent (see <A href="...

Unmask Blood RNA for Gene Expression Profiling

...esearch, but blood consists of a heterogeneous population of cells, including erythrocytes, granulocytes, and other peripheral blood mononuclear cells. One obstacle for expression profiling RNA from whole blood is the relatively high content o...

Working With Laser Capture Microdissection Samples

...taining pure populations of cells from heterogeneous samples. LCM permits the selection and capture of cells, cell aggregates, and discrete morphological structures from thin tissue sections. For LCM, frozen and OCT embedded, or formalin-fixed and paraffin embedded t...

Detection of Mutations in the Fas Antigen of Lymphoma Tumors by RT-PCR and Denaturing Gradient Gel Electrophoresis

... Several techniques have been developed to examine heterogeneous tissue samples for specific mutations, inc...These techniques are useful for rapid screening of heterogeneous tissues, and each has its individual strength. 1 Using RT-PCR and DGGE, we have exa...

Sub-Micron Gold Particles Are Superior to Larger Particles for Efficient Biolistic Transformation of Organelles and Some Cells

... microparticles are irregular in shape and heterogeneous in size, can be toxic to cells, are subject to surface oxidation that can alter DNA binding, and, over time, can catalytically degrade DNA bound to them (Sanford, et al., 1993). Thus, because of higher transformation efficienc...

Transformation of Filamentous Fungi by Microprojectile Bombardment

...fied. Since A. nidulans conidial suspensions are a heterogeneous mixture of spores (with a minimum diameter...ion), and tungsten particles are extremely heterogeneous in size, similar transformation frequencies over a relatively wide range of conditions might...

Exploiting the Life Science Data Explosion to Speed New Drug Discovery

...ological Data Accessible In an increasingly heterogeneous world, we find data sources crossing the bounds of technology. While this has been a reality in the IT world for some time, the requirements for data integration in the life sciences arena differs from traditional IT requirements in several important...

Microgenomic Expression Profiling

...he isolation of desired pure cell populations from heterogeneous tissue samples (Veritas Laser Microdissection Syst... provide the means of precise cell separation from heterogeneous tissue. Advanced isolation systems and amplification protocols produce sufficient material for micro...

Laser Capture Microdissection (LCM) and Expression Profiling of Long-Range Projection Neurons

... Introduction The brain is a highly heterogeneous organ, with a wide variety of cell types identifiable by location, morphology, physiology, and connectivity. Connectivity, or a cells place in a neural circuit, is an important defining trait for neurons, as it is central to the precise circuitry tha...

Differential Gene Expression Analysis of Pure Cell Populations from Frozen UterineTissue Using Laser Capture Microdissection (LCM) and cDNA Microarrays

...reliable procurement of pure cell populations from heterogeneous tissue sections. After LCM, RNA isolated from pure cell populations was amplified to generate adequate amounts of antisense RNA (aRNA) for hybridization, and the differential gene expression profiles were analyzed between two experimental groups. ...

Laser Capture Microdissection of Cells Labeled with Enhanced Green Fluorescent Protein

... stains or labeling by fluorescent antibodies in a heterogeneous tissue. Specificity of the LCM of the neural crest...ains, or labeling by fluorescent antibodies from a heterogeneous population of cells in a tissue section. In this Application Note, an adaptation of this technique f...

The Analysis of Polycyclic Aromatic Hydrocarbons (PAHs) by LC/MS/MS Using an Atmospheric Pressure Photoionization Source

...ally found in aerosol particles, are implicated in heterogeneous atmospheric processing and as important indicators of gas-phase atmospheric processes. Certain carcinogenic PAHs may be carried by ultrafine particles in ambient air into the lungs, and are often the targets of rigorous environmental monitoring. Curr...

Quantitative Analysis of the Cell Cycle in Imaging Applications

...ic phase of a cell is important when cells display heterogeneous responses to drugs as is often the case in high-co...ne H3 found in control cells was consistent with a heterogeneous cell population ( Figure 1 ). We found that approximately 3% were in M phase based on the positive p...

DNA Damage and Repair - Quantification of Sub-Cellular Events Using Automated Confocal Imaging

...n the cellular level, the response appeared highly heterogeneous and cells could be found that showed very few foci next to cells containing a large number of foci ( Figure 1 ). We therefore sampled on average 120 cells/well in a 33 montage. Data was imported into BD Image Data Explorer where dose-response curves ...

FREE FAT CELL ASSAY

...ithout physically removing the aqueous phase. This heterogeneous counting method simplifies the assay, and enables rapid preparation and multiple-detector counting of such assays. MicroScint-E also eliminates the hazardous properties of toluene scintillator system, which was formerly the extractant of choice. ...

Improving the accuracy and speed of mammalian cell counting

...n for varying cell size or morphology is required; heterogeneous cell lines such as a-dipocytes and CHO cells have been measured successfully without any adjustment to the instrument. Combined with a charge-coupled device (CCD) camera and integrated image analysis, the compact microscope is designed to permit smal...

Symphony Corp. and CareEvolution to partner

...f medical information maintained in their internal heterogeneous Electronic Health Record systems. At the core, the organizations are trying to address a safety issue, Kalla said. "How do you access information from different providers when a patient gets sick or injured while traveling?" he asked. "At that point...

FDA approves advanced digital mammography system

...ee sub-groups of women: women under 50, women with heterogeneous or very dense breast tissue, and pre- or perimenopausal women. The findings were published in September by the National Cancer Institute and the American College of Radiology Imaging Network. Jennifer Conner, director of breast imaging for GE Health...

The Tech Market is Looking Up

...- to-end monitoring and control of a wide range of heterogeneous IT resources to ensure application service levels. It is this rich, cross-vendor support that sets VIEO apart from more established vendors who talk about application management, but who typically support only their own product offerings. As importa...