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- Skluzavka: 1
- The Infection (Flu)
- I have the flu
- *cough*
- Skluzavka: 2
- The Infection (Flu) Part 2
- Skluzavka: 3
- Non-Immune Response
- The mucus and hairs found in the nasal cavity and sinuses can trap bacteria and viruses
- Salivary enzymes work to break down viruses before the go further into the body.
- Skluzavka: 4
- Onset of Symptoms
- I don't feel so good...
- Skluzavka: 5
- Innate Immune Cells
- Dendritic Cells: populate tissues, like the skin, that contact the environment. They stimulate adaptive immunity against pathogens that they engulf.
- Eosinophils: usually found beneath an epithelium, are important against multicellular invaders, such as parasitic worms. Upon encountering such parasites, eosinophils discharge destructive enzymes.
- Natural killer cells: Detect abnormal surface proteins found on some virus-infected and cancerous cells. They do not engulf stricken cells. Instead, they release chemicals that lead to cell death, inhibiting spread of the virus or cancer.
- Mast cells: Found in connective tissue and make key contributions to the inflammatory response, described next, as well as to allergies, discussed later.
- Skluzavka: 6
- Inflammatory Response
- As the immune system fights the virus, temperature spikes causing fever and aching
- Skluzavka: 7
- If only he'd gotten a vaccine, since his body would have made memory cells to fight the flu, and it wouldn't be so severe.
- Skluzavka: 8
- B and T Cells
- His body's T and B cells are fighting the influenza. The B cells create antibodies, which bind to the virus and mark it for destructionKiller T cells identify infected cells and destroy them, preventing viral spread.
- Skluzavka: 9
- Recovery
- It's nice to go home
- Let's stop at the pharmacy first honey so I can get vaccinated
- He survived the virus, and much of the immune cells responsible for his recovery are now dead and gone. But his body has created memory B and T cells, so if he comes across the same virus, his body will be better prepared.
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