The I mmune System. Esteban J Juan George Silva. Introduction.
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Esteban J Juan
The picture shown shows all the first line defenses of the human body.
The second line of defense are also nonspecific, attacking any pathogen coming their way. This defense is composed by white blood cells and inflammation. White blood cells are made in the bone marrow, which is what is in the middle of our bones. These flow in our blood and attack bacteria in blood vessels. Some attack the bacteria directly while others release proteins to make it easier to kill a pathogen, or directly releasing proteins to kill bacteria.
What is show in this picture are the third line defenses. As you can see, the antibodies that were produced by the b cells respond to the antigen released by the pathogen.
What this table shows is that the diseases that used to be common before, but now thanks to vaccinations there are less reported cases of these diseases.