AST

Viral DNA sequence a possible trigger for breast cancer

A small sequence of DNA in the envelope (Env) protein of a mouse breast tumor virus (called MMTV) can transform breast cells into cancer cells, according to a study by Katz et al. in the February 7 issue of The Journal of Experimental Medicine. The ability of this motif to transform cells single-handedly suggests that viral infection may be an important and previously unrecognized trigger for bre...

Adding Radiation Therapy To Chemotherapy Improves Survival In Patients With High-risk Breast Cancer

For patients with high-risk breast cancer treated with radical mastectomy and adjuvant chemotherapy, the addition of radiation therapy leads to better survival outcomes with few long-term toxic effects, according to a 20-year follow-up of a randomized trial, which appears in the January 19 issue of the Journal of the National Cancer Institute. The British Columbia randomized radiation the...

Novel Asthma Study Shows Multiple Genetic Input Required; Single-gene Solution Shot Down

For patients with high-risk breast cancer treated with radical mastectomy and adjuvant chemotherapy, the addition of radiation therapy leads to better survival outcomes with few long-term toxic effects, according to a 20-year follow-up of a randomized trial, which appears in the January 19 issue of the Journal of the National Cancer Institute. The British Columbia randomized radiation the...

Deficient DNA Repair Capacity Associated With Increased Risk Of Breast Cancer

Deficiencies in the ability of cells to repair damaged DNA are associated with an increased risk of breast cancer, according to a new study in the January 19 issue of the Journal of the National Cancer Institute. is the system of defenses designed to protect the integrity of the genome. Studies have suggested that deficiency...

Solution to Pollution: New Bacteria Eats Toxic Waste

Utah State University researchers recently discovered a new bacteria that is a natural cleanser for contaminated soil. The bacteria, now being used around the world, is an inexpensive and highly effective solution to pollution. “This project shows mother nature’s capability to be a master engineer,?said Ron Sims, biological and irrigation engineering department head. “Past disposal practi...

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AST at Biology Products

Blasticidin S HCl from Invitrogen

Description:Blasticidin is a nucleoside antibiotic from Streptomyces griseochromogenes. It is a potent translational inhibitor in both prokaryotic and eukaryotic cells. Resistance to blasticidin is conferred by the products of the bsd gene product from Aspergillus terreus....
Company:Invitrogen

Baker's yeast (S. cerevisiae) Phosphoglucose isomerase from Sigma-Aldrich

Description:Physical form: Essentially sulfate-free, powder containing carbohydrate and citrate buffer salts Chem comp: Protein ~ 50% (modified Warburg-Christian)...
Company:Sigma-Aldrich

Baker's yeast (S. cerevisiae) S-Acetyl-coenzyme A synthetase from Sigma-Aldrich

Description:Acetate: CoA ligase (AMP forming), Acetate thiokinase Preparation Unit Definition: One unit will form 1.0 mol of S-acetyl coenzyme A from acetate, ATP and coenzyme A per min at pH 7.5 at 37C....
Company:Sigma-Aldrich

Enolase from baker's yeast (S. cerevisiae) from Sigma-Aldrich

Description:Physical form: Lyophilized powder containing Tris buffer salts Physical Form: lyophilized powder...
Company:Sigma-Aldrich

Baker's yeast (S. cerevisiae) Hexokinase and glucose-6-phosphate dehydrogenase from Sigma-Aldrich

Description:Useful for determination of glucose and ATP. -glucose per min at pH 7.6 at 25C....
Company:Sigma-Aldrich

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AST at Biology Technology

Versatile Vectors for Ponasterone A- Inducible Control of Gene Expression in Mammalian Cells

Stratagene mammalian expressionsystem allows tightc...

Detecting Gastrin-Releasing Peptide Receptor by in situ PCR on Archived Tissue

In situ Adapter for the RoboCycler 40 Temperature Cycler allows rapidamplification of rare mRNA Department of Medicine, University of Illinois at Chicago Figure 1: RoboCycler 40 Temperature Cycler In Situ Adapter Syst...

Epitope-Tagging Vectors for Functional Analysis in Yeast

Stratagene Stratagene has developed a series of epitope-tagging vectors to expressand functionally analyze eukaryotic genes in the budding yeast Saccharomyce...

New Yeast Cloning System for Producing Proteins with Native Amino Acid Sequences

Stratagene Cloning Systems, Inc. The ESP LIC cloning and expression system features rapid and high-yieldproduction of recombinant proteins in yeast. This system usesligation-independent cloning (LIC) for efficient and dire...

Fast and Easy Isolation of PCR-Ready Genomic DNA from Whole Blood

...

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AST at Biology Definition

Astrobiology

= foreign) is a speculative fiel...

Louis Pasteur

. He i...

Gastrula

phase. The gastrula phase is marked by a dramatic restructuring called <a href="/ ?q=/ Biology-De...

Chloroplast membrane

. Each membrane is a <a href="/ ?q=/ Biology-Definition/ Phospholi...

Chloroplast

photosynthesis</ a...

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AST at Biology Dictionary

Trophoblast

<a href="/ ?q=/ Biology-Dic...

Plastid

<A href="http:/ / w...

Gastrulation

, 11th Edition. St. Louis,...

Gastrin

Sour...

Gastrula

, 11th Edition....

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AST at Medicine News

New Drug for Bronchial Asthma

Well, we thought that we had antibodies for just about everything well, we have an anti-IgE antibody now for bronchial asthma. This is particularly useful in bronchial asthma where an attack can be brought by a number of noxious and non-noxious stimuli. This has also been proven to induce symptomatic relief.How does that apply to the Indian context? Well, first we can try by ridding ourse...

Asthma may actually be prevented by Dust and Dirt

National Jewish Medical and Research Center researchers in USA say that a little dust and dirt in the home may help prevent asthma later in life. Environmental endotoxin may have an allergy-protective effect in some infants whose homes have high levels of the bacteria by-product. "Endotoxin seems to drive the immune system to produce cytokines that inhibit certain processes in the body th...

AIDS Disaster in India is Imminent

While concern over the AIDS crisis ravaging sub-Saharan Africa dominates much of the discussion at this week's XIII International AIDS Conference, researchers and AIDS workers are sounding the alarm for what many consider to be the next big trouble spot--India."We have a very serious catastrophe in the offing, and if there's an enemy of India it's not Pakistan, it's not China, and it's n...

Thyroid hormone treatment hastens recovery after cardiac surgery

Thyroid hormone treatment after surgery requiring heart bypass speeds recovery in children undergoing correction of congenital heart defects, according to a clinical trial published in The Lancet. The effects were greatest in the patients who underwent long and difficult surgeries. Following trauma or surgery or during a critical illness, thyroid hormone concentrations plummet. Ma...

Consensus on "Combination Therapy" for Breast Cancer

Breast cancer is the commonest cancer among women in the world. There has been some on going controversy on certain aspects of treatment modalities of this cancer. Besides surgery there are other options to treat the cancer including radiation, chemotherapy and hormonal therapy. Now at a three-day conference at the National Institutes of Health doctors have agreed to a consensus on the c...

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AST at Medicine Products

Castroviejo Corneal Trephine Set

Description:Set includes: trephine body and guard, two disposable blades and stainless steel sterilizing case. May be used freehand or with Elliot trephine handle. Adjustable stop calibrated in 0.2 increments. Polished finish. Most popular size or model....
Company:Bausch & Lomb Storz

Castroviejo Double Ended Synechia Spatula

Description:Double ended with 0.5 mm by 10 mm and 0.5 mm by 15 mm blades. Both ends are sharp with gently curved blades. Square serrated handle with polished finish. Most popular size or model....
Company:Bausch & Lomb Storz

Castroviejo Cyclodialysis Spatula

Description:Angled blade and flat serrated handle with polished finish. Blade: 1 mm x 10 mm....
Company:Bausch & Lomb Storz

Castroviejo Double Ended Cyclodialysis Spatula

Description:Double ended with 0.5 mm x 10 mm and 0.5 mm x 15 mm blades. Both blades gently curved. Square serrated handle with polished finish. Most popular size or model....
Company:Bausch & Lomb Storz

Castroviejo Double Ended Lacrimal Dilator

Description:One end with needle point and other end with medium taper. Stainless steel. Round knurled handle with polished finish. Overall length: 5.7 inches....
Company:Bausch & Lomb Storz

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AST at Medicine Technology

New Advances in Gastric Diagnostics: Smaller is Better

In recent years, miniaturization has opened up exciting possibilities in the area of gastric diagnostics. New technology may make routine GI diagnostic procedures as simple as swallowing a vitamin pill-sized encapsulated unit in the not-too-far future, and the present reality is that these units are becoming valuable adjuncts to traditional diagnostics. Capsule endoscopy (enteroscopy...

Fast, Accurate Influenza A/B Antigen Detection

According to CDC data, influenza infections in this country cause more than 114,000 hospitalizations and 36,000 deaths annually. Among healthy adults, bronchitis and pneumonia are the most common complications. Together, influenza and pneumonia are the sixth leading cause of death in the United States. Influenza is particularly dangerous in elderly and immunocompromised people; however, infec...

The Past, Present and Future of HLA Typing

The Human Leukocyte Antigen (HLA) region, located on the short arm of chromosome 6 (6p21.3), is a highly polymorphic region containing about 200 genes. The HLA region is the human equivalent of the Major Histocompatibility Complex (MHC), and as such contains a set of genes that serve as the backbone of antigen presentation. The Class I proteins, classically involved in presenting endogenous...

Breast Cancer and HER-2/neu: Diagnostic Tools for Targeted Therapy

Contributing Editor With over 200,000 new cases and 40,000 deaths per year, breast cancer undoubtedly qualifies as one of Americas most serious health problems. Recently, efforts to develop early detection methods and more effective therapy have made important progress. This is particularly...

Positive Aggrastat Results Featured in the Journal of the American College of Cardiology

WINNIPEG, Manitoba - (July 11, 2007) Medicure Inc. (TSX:MPH;Amex:MCU), a cardiovascular focused, biopharmaceutical company,today announced that the two-year, follow-up results from theSTRATEGY (Single High-Dose Bolus Tirofiban and Sirolimus-ElutingStent Versus Abciximab and Bare Metal Stent In Acute MyocardialInfarct...

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AST at Medicine Definition

Gastric lavage

. It has been used for over 200 years as a means of eliminating poisons from the stomach. Such devices are normally used...

Anterior mediastinal mass

<div cla...

AST at Medicine Dictionary

Yeast infection

and trigger an overgrowth of a microscopic <a href="/ ?q=/ Medic...

Yeast Infections

fung...

Yeast

and trigger an overgrowth of a microscopic <a href="/ ?q=/ Medic...

Viral gastroenteritis

. The <a href="/ ?q=/ ...

Vaginal yeast infection

vaginosis, which can h...

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