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Archives
Category Archives: Biology
2013 Biology EOC #24 – Video
Posted: Published on April 14th, 2015
2013 Biology EOC #24 This video screencast was created with Doceri on an iPad. Doceri is free in the iTunes app store. Learn more at http://www.doceri.com. By: heymisschem … Continue reading
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High Fidelity: SLU Researcher Finds Keys to Genome
Posted: Published on April 14th, 2015
Contact Information Available for logged-in reporters only Newswise ST. LOUIS - Maintaining the stability and the correct sequence of our genetic information is vital to the accurate transmission of our genetic code. However, in the course of replicating, our DNA frequently runs into roadblocks, arising from both internal and external sources, that threaten the fidelity of our genetic information. The accurate processing of these roadblocks is paramount to genome integrity. Defects in this process can lead to cancer, genetic problems and premature aging. In a research paper published in the Journal of Cell Biology, Alessandro Vindigni, Ph.D., professor in the Edward A. Doisy Department of Biochemistry and Molecular Biology at Saint Louis University, shares a discovery that explains how cells use a process called replication fork reversal in order to deal with these roadblocks and transmit accurate genetic data. Lesions in DNA can occur as often as 100,000 times per cell per day. They can be the result of normal metabolic activities, like free radicals, as well as exposure to environmental factors such as UV radiation, X-rays and chemical compounds. Improper repair of DNA lesions can lead to mutations, abnormal chromosome structures, or loss of genetic information that in turn … Continue reading
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Smartphone-based device could provide rapid, low-cost molecular tumor diagnosis
Posted: Published on April 14th, 2015
Mass. General-developed platform may streamline point-of-care diagnosis in limited resource settings IMAGE:By quantifying the number of tumor-marker-targeting microbeads bound to cells (lower images), the D3 system categorizes high- and low-risk cervical biopsy samples as well as traditional pathology (upper images).... view more Credit: Massachusetts General Hospital Center for Systems Biology A device developed by Massachusetts General Hospital investigators may bring rapid, accurate molecular diagnosis of tumors and other diseases to locations lacking the latest medical technology. In their report appearing in PNAS Early Edition, the researchers describe a smartphone-based device that uses the kind of technology used to make holograms to collect detailed microscopic images for digital analysis of the molecular composition of cells and tissues. "The global burden of cancer, limited access to prompt pathology services in many regions and emerging cell profiling technologies increase the need for low-cost, portable and rapid diagnostic approaches that can be delivered at the point of care," says Cesar Castro, MD, of the MGH Cancer Center and Center for Systems Biology, co-lead author of the report. "The emerging genomic and biological data for various cancers, which can be essential to choosing the most appropriate therapy, supports the need for molecular profiling strategies that … Continue reading
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Morphine test printed on paper
Posted: Published on April 14th, 2015
VTT has developed a drug test printed on paper. VTT used antibodies -- produced by methods of molecular biology -- as morphine sensing molecules when creating this printing technology-based morphine test. Using printing technology to manufacture rapid tests enables high production volumes and low production costs. A paper-based test enables a rapid analysis of whether a compound -- in this case, morphine -- is present in a given sample. Possible future applications of the developed test include drug testing at workplaces and in connection with traffic control. This method, developed by VTT Technical Research Centre of Finland Ltd, provides several advantages, such as high production volumes, low material costs and disposability as well as design freedom based on bendability and foldability of paper. "In 2010, we proved that the VTT method works in a hemoglobin assay. Through our continued development efforts, we wanted to confirm that the method also works in mass-production of more demanding tests. Morphine as a small-sized molecule places major requirements on the analytical performance of the test. In the future, the new method will also present an opportunity to simultaneously analyse other drugs of abuse and residues of pharmaceuticals and their metabolites from one and the … Continue reading
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Born Mastermind Allah: The Biology Of Economics – Video
Posted: Published on April 13th, 2015
Born Mastermind Allah: The Biology Of Economics http://www.houseofkonsciousness.com. By: BLACKNEWS102 … Continue reading
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Biology Reproduction in Organisms part 13 (Fertilization events) class 12 XII – Video
Posted: Published on April 13th, 2015
Biology Reproduction in Organisms part 13 (Fertilization events) class 12 XII Biology Reproduction in Organisms part 13 (Fertilization events) class 12 XII. By: ExamFearVideos … Continue reading
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Our environment AP & TS Class 10th State Board Syllabus Biology – Video
Posted: Published on April 13th, 2015
Our environment AP TS Class 10th State Board Syllabus Biology This video is a part of Pebbles AP Board TS Board Syllabus Live Teaching Videos Pack. Class 6th to Class 10th Subject Packs are available in all leading Book Stores in AP and TS. For online... By: Pebbles AP TS Board Syllabus … Continue reading
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Heredity AP & TS Class 10th State Board Syllabus Biology – Video
Posted: Published on April 13th, 2015
Heredity AP TS Class 10th State Board Syllabus Biology This video is a part of Pebbles AP Board TS Board Syllabus Live Teaching Videos Pack. Class 6th to Class 10th Subject Packs are available in all leading Book Stores in AP and TS. For online... By: Pebbles AP TS Board Syllabus … Continue reading
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Biology Reproduction in Organisms part 16 (Questions) class 12 XII – Video
Posted: Published on April 13th, 2015
Biology Reproduction in Organisms part 16 (Questions) class 12 XII Biology Reproduction in Organisms part 16 (Questions) class 12 XII. By: ExamFearVideos … Continue reading
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Natural Resources AP & TS Class 10th State Board Syllabus Biology – Video
Posted: Published on April 13th, 2015
Natural Resources AP TS Class 10th State Board Syllabus Biology This video is a part of Pebbles AP Board TS Board Syllabus Live Teaching Videos Pack. Class 6th to Class 10th Subject Packs are available in all leading Book Stores in AP and TS. For online... By: Pebbles AP TS Board Syllabus … Continue reading
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