Substances that cause harm by affecting the immune system include

The answer is allergens. This is known to be harmless substance that can cause the immune response to be triggered that likely cause an individual to have an allergic reaction. This could be found in various of things or food depending on how the individual’s immune system will react to it.

16 chromosomes

Explanation:

mitosis creates identical daughter cells, therefore, the cells have the same number of chromosomes as the parent cell

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