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Have We Found the True Cause of Alzheimer's?

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Alzheimer’s has been a mysterious disease ever since it was discovered. Considered to be a condition that fits into the dementia category, Alzheimer’s disease is characterized by physical changes in the brain that deteriorate brain function, cognitive ability, and memory in a certain pattern. People who are at least 65 years old are most often affected, however, there are also early-onset cases. The progression of Alzheimer’s happens over decades and since the brain is such a complicated organ, it has been difficult for scientists to study. The brain of the patient that had the first named case of Alzheimer’s disease was found to have amyloid (protein) plaques and tao tangles (tangles of fibers) within it. These abnormalities have long been considered by medical professionals to be one of the main causes of the disease, however recent studies suggest that the true cause could be another condition that happens initially, and this abnormal tissue growth may be a secondary symptom.Stock…

How the Stars Got Their Colors

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After seeing hundreds of dazzling galaxies and nebulae in print, one might have a preconceived notion of what it’s like to look through a telescope. The reality, however, is somewhat different. Celestial objects such as galaxies, star clusters, and planetary systems are some of the most beautiful treasures in outer space. Unfortunately, they’re so far away that they mostly appear faint to the naked eye, even when viewed through a telescope. The problem is that, unlike a camera, our eyes cannot adjust their exposure time in order to soak up more light from these distant objects. For astrophotographers to get the vibrant colors of a nebula or galaxy, they need to rely on a number of techniques, including long exposures, color compositing and sometimes editing in post-production. Eagle Nebula, Messier 16. SS2596669. The famous Eagle Nebula pictured here is actually three monochromatic images mapped to different color wavelengths combined to create one image. Some might say that this mak…

One Hundred Years of the Flu

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100 years ago one of the deadliest natural disasters hit humanity, killing approximately 4 percent of the earth's population. Even people in remote Pacific Islands and the Arctic met their demise due to this virus. This shocking number of deaths was caused by the flu, although these days most healthy people take the flu lightly. That particular strain, the H1N1 influenza virus, commonly known as the Spanish Flu, claimed many young as well as many previously healthy adults. Additionally, since it arrived on the heels of the Great War, many people were malnourished, living in overcrowded medical camps with little access to good hygiene. Royalty Free and Rights Managed Stock Images of the Flu Government censorship may have played a role in the pandemic. To appear strong, many governments didn't reveal how devastating the flu was, giving no warning to the public to protect themselves. In Spain this information was not censored, giving the world the false impression that the Spani…

The Quirky Beginning of Biomedical Research, with Royalty Free Images

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Few of us give a second thought to popping an aspirin or any other over-the-counter painkiller for a minor ache or pain. Yet, this simple act wouldn’t be possible without the field of biomedical research. Every parent can breathe easier knowing that there are vaccines against measles, whooping cough, polio, chickenpox, mumps, tetanus, and many other childhood diseases. Our modern world also affords us medication to help control diabetes, high blood pressure, high cholesterol, and other life-threatening conditions.Royalty Free Images of Biomedical Research Part of any thorough research method is the clinical trial or the testing of a medication, vaccine or health recommendation. Clinical trials have a quirky history. The first recorded instance of a clinical trial took place in 562 BC. King Nebuchadnezzar, who was not a scientist, wanted his people in top physical condition. He ordered them to consume only meat and wine, believing these to be the most nutritious foods. Several vegeta…

3D Molecular Models

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Dive into chemistry with 3d molecular models! See how the basic building blocks of matter form to create everything in the known universe. Need a refresher on chemistry? An element is a single atom characterized by the number of protons in its nucleus. Atoms bind together to form molecules, which can either be a series of the same element or different elements, making it a compound. A molecule can be a simple pairing of one element, such as the oxygen in the air (O2) or a complex chemical compound, such as ethanol (CH5OH) or baking soda (NaHCO3), containing many different elements.Stock Image Gallery of Molecular Models and Video 3d illustrators represent molecules in a variety of ways. There’s the classic ball and stick model, ribbon models, and the intricate hydrophobicity surface model.
CPK coloring is the most common color system for models (white for hydrogen, black for carbon, red for oxygen, etc.), but artists use a variety of different color pallets to bring uniqueness to th…

Acute Flaccid Myelitis, a Growing Concern for Parents

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Flu season is here, but parents have a new condition to be worried about for their kids: Acute Flaccid Myelitis, or AFM. It has been making headlines as alarming numbers of children are being paralyzed in a pattern that resembles polio scares in the past.AFM has been in existence for a long time, but the recent rise in cases is what’s signaling danger. Polio was eradicated in the United States in 1979, however, at this point in time, there is no such future hope for AFM. This dreaded condition has several possible causes including viruses, environmental toxins, and genetic disorders. Symptoms often follow an infection and high fever. The suspected viruses that may cause AFM include poliovirus or non-polio enteroviruses, West Nile Virus and adenoviruses. RF Images & RM Images of Acute Flaccid Myelitis Although adults may contract this condition, most cases are in those under 18 years old. Symptoms parents should look out for include the sudden onset of drooping eyelids, difficulty mo…

The Beautiful Creepy Crawly World of Francesco Tomasinelli

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Biologist and photographer Francesco Tomasinelli is willing to go where few others are: damp caves where the floors, walls and ceilings are crawling with living creatures. Once there, he pauses to take beautiful and unusual photographs. He has captured giant cockroaches eating a dead bat, a snail slowly attacking a moth, and walls blanketed with crawling insects. Needless to say, the subjects of his images include endless numbers of spiders, scorpions, centipedes, and all manner of creatures that are the stuff of nightmares. View Stock Images of Tomasinelli’s Nature Photography Tomasinelli says, “We are not used to considering small insects and specialized spiders that live in caves as noteworthy animals. But in recent years it has been discovered that these organisms can give us valuable indications to better understand the effects of climate change on ecosystems.” He was involved in a project called CAVELAB and has photographed in caves in Italy and Borneo.
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