This video describes, in generally understandable terms, how the human immune system functions. A bar code analogy is used to simplify a very complex defense mechanism. b cellbar codebarcodeBasicsCoronaviruscovidCOVID-19COVID-19 immune systemCOVID19Dan Cascianodan casianofauciHUMANIMMUNEimmune systemIMMUNITYScience and Other Stuff for Senior Citizensscience for seniorsSYSTEMt cellt memory cellvideoVIRUSVITAMINvlogYouTubeRelated Posts What Happens When the Immune System Learns to Tolerate COVID? January 6, 2026 What Happens When the Immune System Learns to Tolerate COVID? January 5, 2026 So much #research happening!#covid19 #doctor #themoreyouknow #immunity #virus #antibodytesting January 3, 2026 Immune System vs. Viruses: Can We Ever Win? #shorts December 23, 2025 Probiotics, Immunity & COVID – Why I Waited for the Research December 19, 2025 Did Covid Change Your Brain? Doctor Explains December 17, 2025
So much #research happening!#covid19 #doctor #themoreyouknow #immunity #virus #antibodytesting January 3, 2026