In Brief
Part 2 of the immune system explained in this easy going pop culture style series.
In the penultimate episode of Crash Course Anatomy & Physiology, Hank explains your adaptive immune system. The adaptive immune system’s humoral response guards extracellular terrain against pathogens. Hank also explains B cells, antibodies, and how vaccines work.
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Table of Contents
Adaptive Immune System’s Humoral Response 1:19.
How B Cells Mature, Identify Antigens, and Make Antibodies 2:42.
How Antibodies Warm Pathogens and Mark Them for Death 5:22.
Active and Passive Humoral Immunity 6:03.
How Vaccines Work 6:27
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Once again the figures show that young to old disparity in the population is the problem not overpopulation. We really need to develop rejvenation biotechnology with all haste.
Once again overpopulation isnt the problem it is the disparity between young and old in the workforce. This makes rejuvenation biotechnology a suitable solution to avoid economic collapse.
“The world is experiencing unparalleled population aging. This poses problems for productivity and growth, unless we do something about it”
Researchers from North Carolina State University, the University of North Carolina at Chapel Hill and First Affiliated Hospital of Zhengzhou University have developed a synthetic version of a cardiac stem cell. These synthetic stem cells offer therapeutic benefits comparable to those from natural stem cells and could reduce some of the risks associated with stem cell therapies. Additionally, these cells have better preservation stability and the technology is generalizable to other types of stem cells.
Stem cell therapies work by promoting endogenous repair; that is, they aid damaged tissue in repairing itself by secreting “paracrine factors,” including proteins and genetic materials. While stem cell therapies can be effective, they are also associated with some risks of both tumor growth and immune rejection. Also, the cells themselves are very fragile, requiring careful storage and a multi-step process of typing and characterization before they can be used.
Ke Cheng, associate professor of molecular biomedical sciences at NC State, associate professor in the joint biomedical engineering program at NC State and UNC, and adjunct associate professor at the UNC Eshelman School of Pharmacy, led a team in developing the synthetic version of a cardiac stem cell that could be used in off-the-shelf applications.
The immune system part 1.
Our final episodes of Anatomy & Physiology explore the way your body keeps all that complex, intricate stuff alive and healthy — your immune system. The immune system’s responses begin with physical barriers like skin and mucous membranes, and when they’re not enough, there are phagocytes — the neutrophils and macrophages. It also features the awesomely named natural killer cells and the inflammatory response, and we’ll explain how all of these elements work together to save the day if you happen to slip on a banana peel.
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Table of Contents
Physical Barriers Like Skin and Mucous Membranes 2:01.
Phagocytes: Neutrophils and Macrophages 3:17
Natural Killer Cells 4:29
Inflammatory Response 5:29
“Reformat” Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/
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