1.   Elevated levels of homocysteine have also been associated with congenital malformations, miscarriages and low weight of babies at birth.

2.   Public awareness of the hazard caused by the accumulation of elevated levels of radon in buildings continues to grow.

3.   An elevated level of prolactin, a pituitary hormone that may be overproduced when this gland develops microtumors, is a sometimes overlooked cause of dysfunction.

4.   And at a more elevated level, the biological knowledge generated will enhance understanding of what, exactly, it means to be human.

5.   Antibodies fight infections, so elevated levels hint at side effects.

6.   As a result, some patients develop elevated levels of calcium in their blood.

7.   At elevated levels, they are carcinogenic.

8.   Bogart observed a statistical relationship between Down syndrome and elevated levels of only one substance, the hormone human chorionic gonadotropin, or HCG.

9.   A decrease in REM sleep appears to be associated with elevated levels of cortisol, a stress-related hormone that heightens attention and alertness.

10.   Abnormally low levels of melatonin can lead to elevated levels of the female sex hormone estrogen.