Q: Given a passage, construct a question on the basis of the information present in the passage. Construct the question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) it answer uses text phrases from the passage. Avoid creating questions that (i) can't be answered correctly without actually understanding the passage and (ii) uses the same words or phrases given in the passage.
To examine the effects of interleukin (IL)-2 therapy on in-vitro lymphocyte responsiveness in HIV-infected patients and to correlate these data with serum cortisol concentrations.', 'German prospective study.', 'In adult patients (n = 32) treated with 9 x 10(6) IU/day interleukin-2, lymphocyte transformation tests (LTT), serum cortisol concentrations and CD4 T-cell counts were assessed before, during and after IL-2 therapy.', 'A significant decrease in responses towards mitogens and recall antigens (P < 0.05) was observed on day 7 after starting a 4- to 5-day IL-2 therapy as compared to baseline. Serum cortisol levels increased (P < 0.0001) reaching a maximum on day 4, and were still elevated on day 7 (P < 0.005). CD4 T-cell counts significantly decreased with a minimum on day 2 before increasing 2.4-fold above baseline on day 7 (P < 0.005 each). A positive correlation (P < 0.05 each) was observed for changes in cortisol levels and in LTT mitogen and antigen reactions (both day 7 - 0), changes in cortisol levels (day 3 - 0) and CD4 cell counts on day 2, and corticotrophin releasing hormone test results and LTT antigen reactions on day 7. LTT responses, cortisol levels and CD4 T-cell counts returned to baseline on day 30.
A:
Is t-cell function after interleukin-2 therapy in HIV-infected patients correlated with serum cortisol concentrations?