| 1 | Doctors study the structure of the human body. | |
| 2 | What effect do these elements have on the body? | |
| 3 | Systemic lupus can affect almost any organ or organ system in the body. | |
| 4 | The arms and legs are integral parts of the human body; they are integral to the human body. | |
| 5 | He says the levels do not pose any immediate danger to human health. |
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