Answer:
antibodies
Explanation:
The third line of defense is specific resistance. This system relies on antigens, which are specific substances found in foreign microbes. Most antigens are proteins that serve as the stimulus to produce an immune response. The term "antigen" comes from ANTI-body GENerating substances.
It has to be ongoing for SIX MONTHS OR LONGER to be chronic. some can be diagnosed within 12 weeks if it continueswith medication use
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La probabilidad se refiere a la mayor o menor posibilidad de que ocurra un suceso. Su noción viene de la necesidad de medir la certeza o duda de que un suceso dado ocurra o no. Esta establece una relación entre el número de sucesos favorables y el número total de sucesos posibles.