We typically suggest screening at about 10 uM. Lower concentrations may be used in cell-based assays to reduce false positives and to bias detection toward more potent compounds. For "difficult" targets it may be useful to screen with higher concentrations (20-100 uM) but the number of false positive results is usually quite a bit higher resulting in more work and expense in subsequent studies. Dose response studies are typically done up to 100 uM (perhaps 300 uM).

A three-digit absorbance reading, read directly from an instrument is much more accurate that a %T transposed to an absorbance reading.

No. There are different sample diluents necessary for each specific assay. None of the components should be exchanged between kits.

Yes, brain tissue homogenates, liver homogenates, homogenates from Matrigel plugs, and various other sample types have been used in MSD Phosphoprotein Assays.

Various modified RIPA buffers with low concentrations of ionic detergents and urea-based lysis buffers have successfully been used in the assays. The MSD Lysis Buffer is optimal for many assays; however any buffer that is compatible with traditional ELISA should be suitable for use in MSD assays.

In addition to the major course work, each student will take a focused collection of a minimum of four courses, which either provides a second, mini-depth area or allows the student to pursue study related to the major. Students are free to take any concentration as long as it does not have the same name as the major; for example, a mathematics major would not be able to use a mathematics concentration to satisfy the concentration requirements.

We use moderate to low soluble salts that are harmless to the environment. Our product development includes a growing range of tracer compounds, and we can help you choose the one that is best suited to your analytical requirement.

Because PVC can be easily modified at a low cost for most extrusion applications. With the addition of plasticizers, it can be made very soft, very hard or anything in between. Some plasticizers are more permanent and will allow the material to remain flexible at very low temperatures. Other additives increase impact resistance, weatherability and chemical resistance. PVC is easily colored and extruded.

Labelled compounds are compounds in which one or more of the atoms of a portion of the molecules is replaced with or substituted by a detectable quantity of stable or radioactive isotope(s) of the elements present in them chemically, enzymatically or biosynthetically, using suitable precursors, reagents, reaction schemes and procedures. The compounds can be labelled at the specific positions (1,2 or ?, ?, etc.) or generally labelled (denoted by 'G') or uniformly labelled (denoted by 'U').

HTS number is an import statistical reporting number found in the Harmonized Tariff Schedule of the U.S.

The only way to know is to have your home tested. Radon detection kits are inexpensive and easy to use. You can purchase a kit at your local hardware store or other retail outlet, the local office of the American Lung Association ($20 per kit containing 2 tests) or we have a form to order a kit (single test) costing $6.25 from the New York State Department of Health (or you can call them at 1-800-458-1158).

The requirements of the political science major allow students to get a taste of many different interests: political theory, comparative politics, international relations, etc. Students have two introductory classes that they must complete, and four courses from the "field requirements". Beyond that, students can pursue a "concentration" if they wish, with their electives and their Capstone Seminar. The department does not have formal concentrations.

The isotopically labelled compounds have numerous and varied applications as tracers. They are versatile research tools, which can be advantageously employed in studies pertaining to chemistry, biology, medicine, agriculture, biotechnology and genetic engineering.

Organic contaminants in water originate from many different sources. They may be natural or man-made, including domestic sewage, urban run-off, industrial effluents, and farming. Man-made contaminants are particularly concerning as some of them cause serious adverse health effects, such as cancer and birth defects in animals and humans. In recent years persistent organic pollutants, also known as POPs, received much attention.

The minimum purity of all compounds (externally acquired & in-house) is 90% minimum, and 95% on average. Purity is tested by NMR for 100% of the compounds (available free of charge upon request). LC-MS and TLC densitometry are used as supplementary controls.

Compounds come from two main sources. The largest collection is in-house synthesized compounds. Exclusive Chemistry Ltd also has collection of compounds acquired externally from contract chemists and universities, located in Russia.

The more compounds tested, the better chance you have of identifying the most potent and specific inhibitors. We have successfully identified hits from screens of 2-3,000 but we would recommend screening at least 10,000 compounds if you have sufficient material. Screens much smaller than that become inefficient in use of equipment and personnel time and we cannot provide much of a break in cost for very small screens.

We are able to monitor all types of compounds. The most common chemicals that are monitored are as follows:

Purified, biotin, Functional Grade biotin, FITC and Alexa Fluor? 488 antibodies come in 0.5 mg/ml. APC, PE, Alexa Fluor? 647, 700 and tandem dyes are at 0.2 mg/ml. FG purified antibodies are at 1 mg/ml. These concentrations pertain to all antibodies sold as the ug size. Concentration of test sizes (for many of the anti-human antibodies) are indicated on the Data Sheet in the Applications Tested section.

San Francisco, New York City, and Chicago come to mind, initially. You can say that Filipinos are everywhere in the U.S., but they are invisible -- a common quote goes, "Filipino Americans? That's a best kept secret!". Los Angeles also has a large population of Filipino Americans, and a revitalized Historic Filipinotown in the City of Los Angeles (bounded by 101 Freeway to the north, Beverly Blvd. to the south, Hoover St. to the West, and Glendale Blvd. to the East).