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With support from the National Science Foundation, Liangfang Zhang and his team at UC-San Diego have created a nanosponge to combat drug-resistant infections, such as those caused by Methicillin-resistant Staphylococcus aureus (MRSA). The nanosponge, made from biocompatible, biodegradable polymer nanoparticles, is camouflaged with a red blood cell membrane. It circulates in the bloodstream, absorbing the toxins produced by infection. Once the nanosponges are fully loaded with toxins, they are safely disposed of by the liver. They are designed to work with any type of infection or poison that attacks the cellular membrane. Part of the National Science Foundation Series “Science Nation.”
(Source: DCMP)
The immune system has a tough job keeping human bodies free of harmful microbes. Humans come in contact with germs and bacteria every day, and the immune system is challenged to protect the body. Explores how the human body goes to battle against germs in order to keep people healthy and how sometimes the immune system requires assistance.
Explores how ears work and how ears help us communicate with the world. Explains common ear problems, including blockage, infection, and hearing impairment. Discusses symptoms of these conditions and introduces doctor's diagnostic tools. Emphasizes healthy habits and stresses not to put anything in your ears smaller than your elbow. Talks about how children with hearing loss communicate and learn.
The body's internal defense system is an extraordinarily complex and efficient mechanism. The lymphatic system is the key to the human body's immune response. Through the activation of the blood and lymphatic circulation system, many infections are successfully fought off before they gain hold in the body. Illustrates what happens when a man is infected with the common cold.
Defines viruses and traces the way they enter and infect the human body. Discusses virus mutation. Documents researchers working to develop vaccines from viruses. Explains why retroviruses pose a problem to scientists every year.
The heart is a pump, moving blood throughout the body via arteries and veins. Uses graphics to clarify the circulatory system and its functions. Notes the effects of exercise, nutrition, smoking, and infections on this system, and briefly illustrates coagulation, nosebleeds, and vaccinations.
Wearing a mask is a cheap and easy way to help stop the spread of airborne infections like COVID-19. Here's some slow-motion Schlieren imaging experiments to demonstrate why masks work. Part of the "It's Okay to Be Smart" series. Please note this title contains mature themes and references.
Mosquitoes spread several viruses, including Dengue, Chikungunya, Yellow Fever, and Zika. Health officials are developing various methods to help reduce the spread of infections. One of those methods is to produce genetically modified mosquitoes that, when released into the wild, reproduce with wild mosquitoes and cause their offspring to die.
Offers commonsense tips and step-by-step demonstrations on dog care as an alternative to high veterinary bills. Highlights include: toenail maintenance; treating infections and cuts; eye, teeth, and ear care; dry and itchy skin; and dietary considerations. NOTE: Demonstrates how to empty anal glands.
Researchers see promise in using an off-the-shelf fabric in athletic coaching and physical therapy, and another group of scientists are studying how pyroclastic flows defy friction. Other segments include new techniques to test for viral infections and the design of a new robot. Part of the "4 Awesome Discoveries You Probably Didn't Hear About This Week" series.
Part of a series that features a wide variety of video footage, photographs, diagrams, graphics, and labels. For this particular video, students will focus on single gene disorders which cause genetic diseases like cystic fibrosis, fragile X syndrome, and muscular dystrophy. Part of the Science Video Vocab series.
Details the anatomy of the honeybee. Also details the roles of drones, worker bees, the queen, and the mystery of the honeybees' dance. Follows the Colony Collapse Disorder (CCD) problem to a variety of laboratories, investigating the pathology of bee diseases that are wiping out entire colonies and affecting our food supply. Concludes with the discovery that a viral infection is the most likely cause of CCD but warns that bees are subject to many other stresses that can upset the ecological balance and wipe out our supplies of fruits and vegetables.
The body is like a self-supporting hospital, able to deal with its own with wounds, bacterial invasions, fractures, and obstructions to its various passages. Follows the sequence of events over seconds and weeks when skin or bone is damaged, and shows the defensive reactions of blood clotting, fever, and mending of bone fractures.
Most people view antibiotics as miracle drugs. They can get rid of a whole range of infections. But because they are prescribed for so many different ailments, they are easy to overuse. The medical community is now at a crisis point because many of them simply don’t work anymore. Scientists are hunting urgently for new antibiotics--a challenge that is taking them to some remote and unusual places.
Imagine having the ability to manipulate light waves in order to see through a skull right into the brain, or being able to use lasers to diagnose a bacterial infection in a matter of minutes. At the Center for Biophotonic Sensors and Systems (CBSS) at Boston University, technologies enabling these abilities and many others are coming to light. With support from the National Science Foundation (NSF), mechanical engineer Thomas Bifano and his colleagues are developing optical microscopes that can image deep into biological tissue, helping scientists observe molecular-scale activity. Their goal is to revolutionize the diagnosis and treatment of disease. Part of the National Science Foundation Series “Science Nation.”
It is the virus hunters who are leading the life-and-death battles against viruses. Ken Stedman hunts extreme viruses that live in the boiling acid pools of Lassen Volcanic National Park in California. Donald Henderson is responsible for wiping out smallpox-the only virus that humanity has conquered. Within a year of its eradication, AIDS emerged to become a worldwide pandemic. Ebola, Marburg, SARS, West Nile Virus, and a host of new infectious diseases soon followed. Also explores such chronic diseases as cancer, heart disease, multiple sclerosis, and mental illness, which are now suspected of being caused by viruses. Even autism is suspected of being caused by an infection during pregnancy.
Draws on documentary and archival footage, 3-D and 2-D animations, and high-tech imaging to investigate a variety of virological topics: the nature of pandemics as illustrated by the SARS outbreak in China; genetic sequencing of Spanish influenza from exhumed tissue of a century-old corpse; how animal viruses jump the species barrier; the dissection of live viruses in a biosafety level-4 lab; the work of an Ebola research team in Gabon; the discovery of mimivirus; applications of Onyx-015, a genetically engineered adenovirus; and more. Features Vincent A. Fischetti of The Rockefeller University, Jeffery Taubenberger of the Armed Forces Institute of Pathology, Y. Guan of The University of Hong Kong, Didier Raoult of the French National Center for Scientific Research, and other leading virus specialists.
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Biology related concepts
A collection containing 59 resources, curated by Benetech
Collection of anatomy resources
A collection containing 21 resources, curated by Benetech
