Bartrop and Colleagues Compared the Immune Systems of 26 People

question 118

Multiple Choice

Bartrop and colleagues compared the immune systems of 26 people whose spouses had died 8 weeks earlier with those of 26 matched control-group participants whose spouses had not died. The blood samples revealed that _____ was much lower in the bereaved people than in the controls.

• A) lymphocyte functioning
• B) neurotransmitter activity
• C) antigen replication
• D) ion activity

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