Long, stressful periods at the end of the semester, when major projects are due and exams are taken, often produce a(n)
a. decline in immune response
b. improvement in immune response
c. increase in gamma interferon
d. decrease in corticosteroids
Long, stressful periods at the end of the semester, when major projects are due and exams are taken, often produce a(n) Oa.decline in immune response O b.improvement in immune response O c.increase in gamma interferon O d.decrease in corticosteroids