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wiliam789 wiliam789
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5 years ago
The results of studies investigating the role of biological factors suggest that depression is caused by __________.
A) variations in the serotonin transporter gene
B) increases in polypeptide Y in the brain
C) decreases in the levels of gastric ghrelin
D) unusual elevations in both dopamine and glutamate levels
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ggilchr1ggilchr1
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5 years ago
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wiliam789 Author
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#2
5 years ago
All correct!
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