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Ancient Glacier Ice Yields 28 Previously Unknown Viruses From 15,000 Years Ago
https://www.bioscience.com.pk/en/subject/biology/scientists-drilled-into-15-000-year-old-ice-and-found-28-viruses-never-before-cataloged-by-humanitythe scientists devised an ultra‑sterile processing protocol that minimizes contemporary contamination while allowing viral DNA to be recovered. Zhi‑Ping Zhong, lead author and researcher at Ohio State University’s Byrd Polar and Climate Research Center,...
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Deep Underground Fungi and Microscopic Animals Discovered in 350‑Million‑Year‑Old Shale
https://www.bioscience.com.pk/en/subject/biology/fungi-found-in-one-of-earths-most-unexpected-habitats-deep-inside-a-350-million-year-old-rock-formationranging from 247 to 556 meters within the Antrim Shale formation. Large‑volume filtrations allowed scientists to extract DNA, while parallel culturing attempts produced living fungal isolates for laboratory analysis. Genetic sequencing indicated the...
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Hidden Genetic Variants Fueled the Brown Tree Snake’s Island Takeover
https://www.bioscience.com.pk/en/subject/ecology/a-small-group-of-snakes-conquered-an-entire-island-scientists-now-know-how-they-did-itScientists use brown tree snake DNA to unravel the massive ecological fallout on Guam decades after their invasive arrival. A handful of brown tree snakes (Boiga irregularis) sparked one of the most devastating invasions on Guam, and new genomic...
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New Northern Green Anaconda Species Unveiled in Amazon During Will Smith Nat Geo Filming
https://www.bioscience.com.pk/en/subject/biology/scientists-found-a-giant-new-anaconda-species-hidden-in-the-amazon-while-filming-will-smiths-tv-showAmazon researchers uncover a hidden giant anaconda lineage, DNA shows it diverged nearly 10 million years ago. A joint team of researchers and Waorani guides has announced the discovery of a genetically distinct lineage of green anaconda in Ecuador’s...
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Ancient Vietnamese Kids Show Congenital Treponemal Signs May Indicate Yaws Not Syphilis
https://www.bioscience.com.pk/en/subject/earth-science/these-ancient-skeletons-were-expected-to-reveal-syphilis-but-scientists-found-a-different-disease-storyand skeletal remains reveal the damage left by an ancient treponemal disease. © International Journal of Osteoarchaeology DNA Preservation Challenges and Future Directions Recovering ancient pathogen DNA in tropical climates is notoriously difficult, as...
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Deep Earth Reveals Unexpected Fungal Boom: Thousands of Cells per Milliliter Below Surface
https://www.bioscience.com.pk/en/subject/chemistry/fungi-found-1-640-feet-underground-are-challenging-what-scientists-thought-about-deep-lifegas‑producing wells drilled into organic‑rich shale to uncover hidden fungal life deep beneath the surface. By integrating DNA sequencing, microscopy, fungal culturing and geochemical profiling, the researchers explored microbial communities residing...
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Archaeologists Reveal Why A Wealthy 17th Century Woman Was Buried With A Sickle And Padlock
https://www.bioscience.com.pk/en/subject/biology/a-17th-century-polish-grave-revealed-a-woman-buried-like-a-vampire-with-a-lock-on-her-foot-leaving-archaeologists-searching-for-who-she-wasof folklore and reality in the 17th-century Polish-Lithuanian Commonwealth. By employing a combination of radiocarbon dating, DNA testing, and isotopic analysis, a team from Nicolaus Copernicus University has begun to piece together the identity and...
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Archaeologists Open 40,000 Year Old Sealed Chamber Untouched Since Neanderthals Left
https://www.bioscience.com.pk/en/subject/earth-science/archaeologists-open-a-40-000-year-sealed-cave-and-discover-one-of-the-worlds-last-neanderthal-groups-insidesequence and the subsequent presence of modern humans. © Clive Finlayson, Gibraltar Museum Future Prospects for Ancient DNA Analysis The museum team is currently focused on the potential for groundbreaking discoveries within the sealed chamber. Because...
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Scientists Discover Common Gut Fungus That Could Help Repair Radiation Damage
https://www.bioscience.com.pk/en/subject/biology/this-gut-fungus-may-help-protect-the-body-from-radiation-damageconditions, the fungus produces specific compounds—L-glutamic acid, L-aspartic acid, and DL-lysine—that directly facilitate DNA repair and cell proliferation in damaged epithelial tissue. Tests on human intestinal cells confirmed that these amino acids...
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New Fossil Discovery Reveals Denisovan Anatomy Was Nothing Like Their Neanderthal Cousins
https://www.bioscience.com.pk/en/subject/earth-science/a-single-142-000-year-old-bone-just-revealed-the-denisovans-werent-built-like-their-neanderthal-cousinsBiology Through Ancient Proteins Because the environmental conditions at Bianfu Cave were hostile to the survival of ancient DNA, researchers relied on proteomic analysis to identify the fossils. Geneticist Qiaomei Fu noted that the site’s climate made...
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Scientists Discover Human Brain Gene That Escaped Into A Poxvirus
https://www.bioscience.com.pk/en/subject/biology/a-gene-from-the-human-brain-somehow-ended-up-inside-a-skin-virus-leaving-scientists-with-more-questions-than-answersNew research on the BC200 gene reveals how its dual functions are challenging our understanding of mobile DNA and viral evolution in the human genome. A peculiar genetic element known as BC200 is challenging long-held assumptions about how genomes...
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Hidden Viral DNA and Protein Switches Reveal How E. coli Senses Host Heat
https://www.bioscience.com.pk/en/subject/genetics/structural-basis-of-h-ns-mediated-temperature-dependent-stimulation-of-initial-growth-in-escherichia-coliStrain MG1655 carries a 23-kilobase viral remnant known as the Rac prophage, which is entirely absent in W3110 type A. Viral DNA fragments like prophages make up about 20% of the E. coli K-12 genome and were once dismissed as evolutionary junk. The new...
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Zika Virus Infection Alters Human and Viral RNA
https://www.bioscience.com.pk/en/topics/microbiology/zika-virus-infection-alters-human-and-viral-rnaunless they take methylation into account.” In human cells, RNA is the genetic material that carries instructions from the DNA in a cell’s nucleus out to the cytoplasm, where molecular machinery uses those instructions to build proteins. Cells can...
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Branches of Biology
https://www.bioscience.com.pk/en/topics/zoology/branches-of-biology— Application of science for identification of various facts about blood groups, hair, poisons, narcotics, fingerprints, DNA fingerprinting for solving civilian and criminal cases. Food technology — The study of processing and preservation of food is...
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Vitamins and Minerals: The Building Blocks of Optimal Health and Vitality
https://www.bioscience.com.pk/en/topics/zoology/vitamins-and-mineralsThe most important use in the body is in the synthesis of purines and thymine. Folic acid is required for the formation of DNA and the replication of cellular genes. Some folic acid is synthesized by bacteria in the colon and absorbed from there....
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Stool Test for Ova and Parasites (O&P)
https://www.bioscience.com.pk/en/topics/pathology/stool-examination-for-ova-and-parasitesfails to identify organisms, yet clinical suspicion of intestinal amebiasis persists. Detection of Entamoeba histolytica DNA Polymerase chain reaction (PCR)-based assays enable the detection of E. histolytica-specific DNA. Serologic Tests Serologic...
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Principles of Working of Automated Hematology Analyzer
https://www.bioscience.com.pk/en/topics/hematology/principles-of-working-of-automated-hemotology-analyzerand monocytes. 3. Fluorescence Fluorescence technology in hematology analyzers measures the cellular content of RNA, DNA, and cell surface antigens. For example, reticulocytes (immature red blood cells) are identified by their RNA content, while...
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The Abominable Snowman (Yeti) - Myth or Reality?
https://www.bioscience.com.pk/en/subject/biology/the-abominable-snowman-yeti-myth-or-realityare now believed to be cases of mistaken identity involving known animals such as Himalayan brown bears or langurs. DNA Evidence and Studies Over the past few decades, genetic studies have examined hair and bone samples claimed to belong to the Yeti. In...
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The ‘Vampire Squid From Hell’ Just Revealed a Giant Genome That Rewrites Octopus Origins
https://www.bioscience.com.pk/en/subject/biology/the-vampire-squid-from-hell-just-revealed-a-giant-genome-that-rewrites-octopus-originsused a combination of modern genomic tools: Long-Read Genome Sequencing PacBio HiFi sequencing generated long, accurate DNA reads. These allowed researchers to assemble a very large and complex genome with high continuity. Comparative Genomics The...
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Could Complex Life Be a Billion Years Older Than We Thought?
https://www.bioscience.com.pk/en/subject/genetics/could-complex-life-be-a-billion-years-older-than-we-thoughtin the world of cells? Complex cells, called eukaryotic cells, have several signature features: A nucleus Stores and protects DNA Acts like a control center for the cell An internal skeleton (toskeleton) Gives cells shape Helps them move and transport...