Advantages of Monolithic Laser Combiner Technology in Confocal Microscopy Systems

Jan 6

Fluorescence microscopy techniques require a reliable light source at the desired wavelength or wavelengths, with minimal downtime for maintenance and alignment. Lasers are a popular light source, although the alignment and upkeep of laser combiners is a time-consuming prospect for many users.

Size-Exclusion Chromatography for Purification of Biomolecules

Dec 2 2009

Size-exclusion chromatography (SEC) is a popular method to separate biomolecules based on their size. Primarily, it is applied to the separation of biopolymers such as proteins and nucleic acids, i.e. water-soluble polymers.

Improving Separation During Electrophoresis

Dec 2 2009

SeparateIT gels represent a novel gel matrix for DNA electrophoresis. Gel polymers are arranged in a conceptually different way, in accordance with a new theoretical model of gel electrophoresis.

Improving Quality of ELISA

Dec 2 2009

Using ready-to-use ELISA kits from manufacturers is easy and convenient. Sometimes however, home-made ELISA is required because there is no kit available with the right antibodies or the characteristics of the available kits such as their limits of detection are not appropriate.

Attention Deficit & Hyperactivity in a Drosophila Memory Mutant

Nov 9 2009

Action selection is modulated by external stimuli either directly or via memory retrieval. In a constantly changing environment, animals have evolved attention-like processes to effectively filter the incoming sensory stream. These attention-like processes, in turn, are modulated by memory. The neurobiological nature of how attention, action selection and memory are inter-connected is unknown. We describe here new phenotypes of the memory mutant radish in the fruit fly Drosophila.

Mechanisms of plasticity in simple taxis behaviors in Drosophila

Nov 8 2009

Like the proverbial moth drawn to the candle flame, the fruit fly Drosophila also stereotypically approaches light sources. This positive phototaxis is the archetypal example of hard-wired input-output behaviors.

Live cell imaging of mutant and wild-type GABA-A receptor trafficking using a novel reporter protein

Nov 8 2009

Efficient signaling in the brain requires precise regulation and targeting of cell surface ion-channels. Mutations in these channels associated with inherited diseases can cause improper targeting and reduced surface expression.

ADP-Glo™: An Ideal Approach to Monitor the Activity of Protein Kinases and Beyond

Oct 16 2009

Because of its versatility (alltypesofsubstrates), robustness (Z’>0.8), rapidperformance, and its ease of use, the luminescence based Kinase Glo® assay platform has gained wide acceptance in many drug screening programs for protein kinase inhibitors.

Parental support and knowledge and adolescents' sexual health: testing two mediational models in a national dutch sample.

1 hour ago

This study investigated age- and gender-specific associations between parental support and parental knowledge of the child's whereabouts, on the one hand, and sexual experience and sexual health (the ability to have safe and pleasurable sexual experiences) on the other hand. A...

Erybraedin C, a natural compound from the plant Bituminaria bituminosa, inhibits both the cleavage and religation activities of human topoisomerase I.

11 hours ago

The interaction of human topoisomerase I and erybraedin C, a pterocarpan purified from the plant Bituminaria bituminosa, that was shown to have an antitumour activity, was investigated through enzymatic activity assays and molecular docking procedures. Erybraedin C is able to...

Field evaluation of the protective efficacy of Mycobacterium bovis BCG vaccine against bovine tuberculosis.

11 hours ago

The protective efficacy of Mycobacterium bovis BCG (1 x 10(6) single dose) was evaluated under field conditions. A total of 140 male Holstein Friesian calves, one to two week-old were selected. Two groups of 70 each were formed, one group was vaccinated and the other was...

Use of serology and polymerase chain reaction for the rapid eradication of small ruminant lentivirus infections from a sheep flock: a case report.

11 hours ago

A SRLV-free sheep flock incurred infection which led to an SRLV infection rate of over 50% of the ewes (34/64) within a 30 months period, indicating that environmental conditions were favourable to transmission. An intensive regimen of sampling at short intervals and testing...

Prokariotic Cell Collection in Denmark

Nov 6 2009

I would like to know about a prokariotic cell collection in Denmark. Is there a cell bank in this country? I need a Lactobacillus strain for a fermentation assay and this information about the bank is very helpful for me.

Request for Entries

Oct 16 2009

Ask the Experts is your chance to get the answers to questions on applications, materials, methods, processes, and technologies. Email you question to bst_web@advantagemedia.com, and the editors of Bioscience Technology will find an appropriate expert to answer it. Watch this space in the future to see the questions your colleagues are posting.