Question:

Where different size of particle stay in our body?

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PM whose diameter is smaller than 2.5 micrometer not only can get into our lung but also can get into our blood system. PM whose diameter is bigger than 50 micrometer can passthrough our throat and get into the lung. PM whose diameter is bigger than 10 micrometer not only can get into our lung but also can get into our blood system. PM whose diameter is smaller than 2.5 micrometer can not get into our lung.