his will be a two-part essay. The first part will discuss the lines of defense w
his will be a two-part essay. The first part will discuss the lines of defense within the body including the physical barriers, the innate immune system, phagocytosis, immunological surveillance, interferons, inflammation, humoral immunity, and cell-mediated immunity. The second part of the essay will require you to review scholarly research on the COVID-19 virus. The Coronavirus link in the Additional Materials for this Module will help you get started in the research process. Please base your responses on scholarly research and answer the following questions: How does COVID-19 spread from person to person? What internal and external lines of defense will stop or slow the spread? How does the body work to fight infection through the three lines of defense? Required Topics to Address: Physical barriers, the first line of defense The second line of defense, the innate immune system Phagocytosis Immunological Surveillance Interferons Inflammation The third line of defense, humoral immunity The third line of defense, cell-mediated immunity Review scholarly research on the COVID-19 pandemic. Describe how this virus spreads and what internal and external lines of defense will stop the spread.

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