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.

Ex Input:
To determine whether granulocyte colony-stimulating factor (G-CSF) could prevent loss of spermatogenesis induced by busulfan chemotherapy via protection of undifferentiated spermatogonia, which might serve as an adjuvant approach to preserving male fertility among cancer patients.', 'Laboratory animal study.', 'University.', 'Laboratory mice.', 'Five-week-old mice were treated with a sterilizing busulfan dose and with 7 days of G-CSF or vehicle treatment and evaluated 10 weeks later (experiment 1) or 24 hours after treatment (experiment 2).', 'Experiment 1: testis weights, epididymal sperm counts, testis histology. Experiment 2: PLZF immunofluorescent costaining with apoptotic markers. Molecular analysis of G-CSF receptor expression in undifferentiated spermatogonia.', 'Ten weeks after treatment, busulfan-treated mice that also received treatment with G-CSF exhibited significantly better recovery of spermatogenesis and epididymal sperm counts than animals receiving busulfan alone. G-CSF led to increased numbers of PLZF+ spermatogonia 24 hours after treatment that was not accompanied by changes in apoptosis. To address the cellular target of G-CSF, mRNA for the G-CSF receptor, Csf3r, was found in adult mouse testes and cultured THY1+ (undifferentiated) spermatogonia, and cell-surface localized CSF3R was observed on 3% of cultured THY1+ spermatogonia.

Ex Output:
Does granulocyte colony-stimulating factor prevent loss of spermatogenesis after sterilizing busulfan chemotherapy?


Ex Input:
Learning and memory deficits are commonly reported in children with heavy prenatal alcohol exposure. Our recent work suggested that children with heavy prenatal alcohol exposure retained information as well as controls on a verbal learning test but not on a test of nonverbal learning and memory. To better understand the cause of this differential pattern of performance, the current study re-analyzed data from our previous study to determine if the presence of an implicit learning strategy may account, at least in part, for the finding of spared retention.', "The current study examined verbal learning and memory abilities in 35 children with Fetal Alcohol Spectrum Disorders (FASD) and 34 nonexposed controls (CON) matched for age (9-16 years), sex, ethnicity, handedness, and socioeconomic status. Groups were compared on two measures of verbal learning, one with an implicit strategy (California Verbal Learning Test-Children's Version; CVLT-C) and one without (Verbal Learning subtest of the Wide Range Assessment of Memory and Learning; VL-WRAML).", 'Children with FASD learned less information overall than children in the CON group. Both groups learned a greater percentage of information and reached a learning plateau earlier on the CVLT-C compared with the VL-WRAML. Groups also showed comparable rates of retention after a delay on the CVLT-C. In contrast, on the VL-WRAML, children with FASD showed poorer retention rates than children in the CON group. Interestingly, children with FASD did not differ from children in the CON group on CVLT-C semantic clustering scores for learning trials 1 through 3, and greater utilization of semantic clustering was correlated with better learning and memory performance in both groups. This overall pattern of results was not related to overall intellectual level.

Ex Output:
Does implicit strategy affect learning in children with heavy prenatal alcohol exposure?


Ex Input:
(1) Compare ideal cut-off points for DS and %FEV1 at 1 and 3\xa0h\xa0to predict hospitalization/relapse in subjects with moderate to severe asthma exacerbation (2) Develop a multivariate regression model using DS, %FEV1, demographic, and clinical variables to predict hospitalization/relapse.', 'Subjects with acute exacerbation of asthma (FEV1 <50% predicted following 30\xa0min\xa0of standardized treatment: 5\xa0mg nebulized albuterol; 0.5-1.5\xa0mg nebulized ipratropium; and 50\xa0mg oral prednisone) were eligible. All subjects had %FEV1 and DS obtained at baseline and hourly for 3\xa0h. Using hospitalization/relapse as the outcome of interest; we compared the area under the receiveroperator curves (AUC) between the 1 and 3\xa0h\xa0DS and %FEV1 measurements, and the AUC for the change in DS and %FEV1 between baseline and hour-3. We determined ideal cut-points for %FEV1 and DS to maximize sensitivity and specificity. Sensitivity, specificity, positive and negative predictive values, and positive and negative likelihood ratios (LR) were compared between %FEV1 and DS. We developed a multivariate regression model examining the association of specific demographic and clinical variables to hospitalization/relapse.', '142 patients were included for analysis. The AUC was greatest for the 3-h\xa0DS (0.721), followed by the 3-h\xa0%FEV1 (0.669). Optimum cut-off values were a DS of 2, and an FEV1 of 42%. These were associated with a +LR for the composite outcome of 3.06 and 2.48 respectively. Logistic regression showed baseline DS, 3-h\xa0DS, change in DS, and oxygen use at hour 3 were all associated with the composite outcome.

Ex Output:

Are repeated dyspnea score and percent FEV1 modest predictors of hospitalization/relapse in patients with acute asthma exacerbation?