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Which structure is highlighted and indicated by the leader line?

The vaccine in a flu shot contains weakened flu viruses. how does a flu shot work with the immune system? a. it destroys lymphocytes. b. it destroys macrophages. c. it activates macrophages. d. it activates lymphocytes.

Where are the strongest jet streams located?

Stem cells found adult tissue such as in bone marrow brain muscle skin and liver are only capable of what