Every second of your life you are under attack. Bacteria, viruses, spores and more living stuff wants to enter your body and use its resources for itself. The immune system is a powerful army of cells that fights like a T-Rex on speed and sacrifices itself for your survival. Without it you would die in no time. This sounds simple but the reality is complex, beautiful and just awesome. An animation of the immune system.

What is it, and are we close to a cure? SHARE on Twitter: http://bit.ly/1NalHm8 & Facebook: http://on.fb.me/1MTLpMp Get a FREE Audible Trial: http://audible.com/asap Written by Rachel Salt, Mitchell Moffit and Gregory Brown SUBSCRIBE for more (it's free!): http://bit.ly/asapsci GET THE ASAPSCIENCE BOOK: http://asapscience.com/book/ FOLLOW US! Instagram and Twitter: @whalewatchmeplz and @mitchellmoffit Clickable: http://bit.ly/16F1jeC and http://bit.ly/15J7ube AsapINSTAGRAM: https://instagram.com/asapscience/ Facebook: http://facebook.com/AsapSCIENCE Twitter: http://twitter.com/AsapSCIENCE Tumblr: http://asapscience.tumblr.com Vine: Search "AsapSCIENCE" on vine! SNAPCHAT 'whalewatchmeplz' and 'pixelmitch' Created by Mitchell Moffit (twitter @mitchellmoffit) and Gregory Brown (twitter @whalewatchmeplz). Send us stuff! ASAPSCIENCE INC. P.O. Box 93, Toronto P Toronto, ON, M5S2S6 Further Reading: https://www.aids.gov/hiv-aids-basics/hiv-aids-101/global-statistics/ The Global HIV/AIDS Epidemic HIV Transmission http://www.cdc.gov/hiv/basics/transmission.html http://lcbb4.epfl.ch/reading/HIV/2013-PeetersOriginEpidemiologyHIV.pdf The origin and molecular epidemiology of HIV https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2441482/ Env length and N-linked glycosylation following transmission of Human Immunodeficiency Virus Type 1 subtype B viruses http://www.researchgate.net/profile/Pavel_Pugach/publication/8679190_The_CCR5_and_CXCR4_coreceptors--central_to_understanding_the_transmission_and_pathogenesis_of_human_immunodeficiency_virus_type_1_infection/links/0fcfd51200b440c2fe000000.pdf The CCR5 and CXCR4 coreceptors-central to understanding the transmission and pathogenesis of human immunodeficiency virus type 1 infection. AIDS Res. Hum. Retroviruses 20, 111-126 http://dspace.uah.es/dspace/bitstream/handle/10017/5071/840.pdf?sequence=1 Dimerization inhibitors of HIV-1 reverse transcriptase, protease and integrase: A single mode of inhibition for the three HIV enzymes? http://www.biomedcentral.com/content/pdf/1742-4690-6-40.pdf A historical reflection on the discovery of human retroviruses http://www.ms.uky.edu/~ma137/Fasttrack13/HIV_Perelson_Science1996.pdf HIV-1 Dynamics in Vivo: Virion Clearance Rate, Infected Cell Life-Span, and Viral Generation Time Precise determination of time to reach viral load set point after acute HIV-1 infection. http://www.ncbi.nlm.nih.gov/pubmed/23143525 http://www.nature.com/nature/journal/v362/n6418/abs/362355a0.html HIV infection is active and progressive in lymphoid tissue during the clinically latent stage of disease http://www.joponline.org/doi/abs/10.1902/jop.1994.65.5.393 Necrotizing Ulcerative Periodontitis: A Marker for Immune Deterioration and a Predictor for the Diagnosis of AIDS https://www.aids.gov/hiv-aids-basics/just-diagnosed-with-hiv-aids/hiv-in-your-body/stages-of-hiv/ Stages of HIV Infection http://www.cdc.gov/hiv/basics/livingwithhiv/opportunisticinfections.html Opportunistic Infections https://aidsinfo.nih.gov/drugs/445/pyrimethamine/0/patient AIDSinfo Drug Database http://www.cdc.gov/hiv/basics/prep.html PrEP http://www.who.int/hiv/topics/mtct/q2_chi_2007.pdf Single-dose tenofovir and emtricitabine for reduction of viral resistance to non-nucleoside reverse transcriptase inhibitor drugs in women given intrapartum nevirapine for perinatal HIV prevention: an open-label randomised trial http://dspace.uah.es/dspace/bitstream/handle/10017/5071/840.pdf?sequence=1 Dimerization inhibitors of HIV-1 reverse transcriptase, protease and integrase: A single mode of inhibition for the three HIV enzymes? http://lcbb4.epfl.ch/reading/HIV/2013-PeetersOriginEpidemiologyHIV.pdf http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3234451/ http://www.nejm.org/doi/full/10.1056/NEJMoa0802905 Long-Term Control of HIV by CCR5 Delta32/Delta32 Stem-Cell Transplantation

Overview of the Krebs or Citric Acid Cycle Watch the next lesson: https://www.khanacademy.org/science/biology/cellular-respiration-and-fermentation/oxidative-phosphorylation/v/oxidative-phosphorylation-and-the-electon-transport-chain?utm_source=YT&utm_medium=Desc&utm_campaign=biology Missed the previous lesson? https://www.khanacademy.org/science/biology/cellular-respiration-and-fermentation/glycolysis/v/glycolysis-overview?utm_source=YT&utm_medium=Desc&utm_campaign=biology Biology on Khan Academy: Life is beautiful! From atoms to cells, from genes to proteins, from populations to ecosystems, biology is the study of the fascinating and intricate systems that make life possible. Dive in to learn more about the many branches of biology and why they are exciting and important. Covers topics seen in a high school or first-year college biology course. About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software, deep data analytics and intuitive user interfaces to help students and teachers around the world. Our resources cover preschool through early college education, including math, biology, chemistry, physics, economics, finance, history, grammar and more. We offer free personalized SAT test prep in partnership with the test developer, the College Board. Khan Academy has been translated into dozens of languages, and 100 million people use our platform worldwide every year. For more information, visit www.khanacademy.org, join us on Facebook or follow us on Twitter at @khanacademy. And remember, you can learn anything. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy's Biology channel: https://www.youtube.com/channel/UC82qE46vcTn7lP4tK_RHhdg?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy

http://www.FauquierENT.net - Video demonstrates how the Epley maneuver is performed to treat POSTERIOR canal BPPV affecting the right ear. Animation showing what is going on within the inner ear is also shown in the 2nd half of the video. For more information: http://www.FauquierENT.net/bppv.htm Watch how the inner ear balance system works here: https://www.youtube.com/watch?v=YMIMvBa8XGs Perform Dix-Hallpike to determine what type of BPPV here: https://www.youtube.com/watch?v=wgWOmuB1VFY POSTERIOR canal BPPV treated by Epley maneuver here: https://www.youtube.com/watch?v=9SLm76jQg3g LATERAL canal BPPV treated by Lempert maneuver here: https://www.youtube.com/watch?v=mwTmM6uF5yA SUPERIOR canal BPPV treated by Deep Head-Hanging here: https://www.youtube.com/watch?v=qw1QciZWfP0 Flowchart for BPPV diagnosis and treatment can be found here: http://www.fauquierent.net/bppv1.htm Video on Meniere's Disease: https://www.youtube.com/watch?v=qrk7OyAB_ss