In this task, you are given a passage which has a question and the context. You have to generate an answer to the question based on the information present in the context.

[Q]: Context: This study was conducted to determine if there was an increase in the urinary excretion of fluoride, after the use of fluoride mouth rinses in children.', 'The sample consisted of 58 children aged 5-8 years, randomly selected, residents in non-fluoridated water areas. Urine samples were collected prior to mouthwash and also 2 hours after use. The control sample, which received no treatment, consisted of 16 children of equivalent age and from the same community. Urinary excretion of fluoride was analysed by determining the pH, creatinine, F- ion and fluoride (mg)/creatinine (g) (F/Cr) ratio in urine. Results In the studied sample, the mean F/Cr ratio before fluoride mouth rinse was 0.26 mg/g and it rose to 1.58 mg/g 2 hours after mouth rinse. This difference of 1.33 mg/g was statistically highly significant (p<.001). In the control group no significant changes occurred. The average 2 hours afterward F/Cr ratios were 0.29 and 0.27 respectively (p=0.426).\Question: Does renal excretion of fluoride after fluoride mouth rinse in children?
[A]: After the use of a fluoride mouthwash, in children, there is a statistically significant increase of fluoride ion in urine, which can be attributed to the application of this product.


[Q]: Context: This study investigated whether a 7-week yoga intervention could improve physical function, perceived stress, and mental/emotional wellness in elderly participants.', '8 participants (66.5\xa0±\xa00.3 years) attended 2 60-min Hatha yoga sessions/week for 7 weeks, and performed pre- and post-intervention assessments. Balance was assessed using a 5-test battery. Flexibility was measured by sit-and-reach and shoulder flexibility tests. Functional mobility tests included 8-ft up-and-go, 5 chair stands, and 4-m walk. Participants completed SF-12, exhaustion level, and Perceived Stress Scale (PSS) questionnaires.', 'SF-12 Mental Component Summary scores, exhaustion levels, and PSS scores improved post-intervention. No differences were found for physical function measures.\Question: Does yoga reduce perceived stress and exhaustion levels in healthy elderly individuals?
[A]: Yoga participation can improve mental/emotional wellness, exhaustion levels, and stress levels in elderly individuals, even without measurable improvements in physical function. Clinicians and health practitioners who work with the elderly should consider yoga as a potential therapeutic modality for improving important aspects of quality of life in this population.


[Q]: Context: Immunosuppression after burn injury increases the risk of sepsis and multiple organ failure. We examined changes of immune function in mice after burn injury and investigated the immunostimulatory effect of oligodeoxynucleotides containing CpG motifs.', 'Male BALB/c mice (8-10 wk old) received a full-thickness burn to 20% of their body surface area, after which the immunological parameters of splenic macrophages were evaluated. To assess the immunostimulatory effect of oligodeoxynucleotide treatment, splenic macrophages harvested from burned mice were incubated with oligodeoxynucleotides. Then cytokine production and major histocompatibility complex class II antigen expression were measured. To assess the in vivo effect of oligodeoxynucleotides, intraperitoneal administration was done on day 4 after burn injury, and class II antigen expression by splenic macrophages was measured 10 d later.', 'Class II antigen expression and the synthesis of cytokines (interleukin-12, tumor necrosis factor-alpha, interleukin-6, and interleukin-1) by splenic macrophages were significantly reduced after burn injury, while incubation of splenic macrophages from burned mice with oligodeoxynucleotides partially enhanced the production of interleukin-12, tumor necrosis factor-alpha, interleukin-6, and interleukin-1. In addition, intraperitoneal administration of oligodeoxynucleotides enhanced class II antigen expression by splenic macrophages.\Question: Do cpG oligonucleotides activate the immune response in burned mice?
[A]:
The reduction of class II antigen expression and synthesis of cytokines (interleukin-12, tumor necrosis factor-alpha, interleukin-6, and interleukin-1) by splenic macrophages after burn injury was partially reversed by oligodeoxynucleotide treatment. Therefore, immunostimulatory oligodeoxynucleotides may be a potential treatment for post-burn immunosuppression.