How the immune system escalates from barriers to adaptive defense

Your immune system fights infections in layers

The body does not begin every infection with its most specialized weapons. Skin and other barriers act first. If germs get through, fast general defenses respond. Slower specialized defenses arrive later, target the invader more precisely, and can remember it for next time.

Paris moved cemetery remains into old mines

After Paris’s inner-city cemeteries became overcrowded, burials there were condemned in 1786. The remains from parish cemeteries were transferred to a renovated section of the city’s stone mines.

A tea glut helped provoke the Boston Tea Party

In 1773, the financially troubled East India Company had 18 million pounds of unsold tea in British warehouses. The government gave it a loan and access to American markets on terms that favored it over colonial importers. This helped provoke the Boston Tea Party, one of the incidents leading to the American Revolution.

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How the immune system escalates from barriers to adaptive defense

Your immune system fights infections in layers

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