1394
The presence of a lymphocyte alveolitis with a predominance of CD4+ T cells in 3 RA patients and CD8+ T cells with a concomitant increase in neutrophils in another case suggests that immunologically mediated reactions may be one damage mechanism in MTX-induced pneumonitis.
 3 RA patients: Subject; 3: Subject.Population; a lymphocyte alveolitis with a predominance of CD4+ T cells: Effect; pneumonitis: Effect; CD8+ T cells with a concomitant increase in neutrophils: Effect; MTX: Treatment; RA: Treatment.Disorder; MTX: Treatment.Drug
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: adverse event 
  Option: Treatment.Freq, Subject.Population, Combination.Drug, Subject.Gender, Treatment.Duration, Subject, Effect, Treatment, Treatment.Disorder, Subject.Disorder, Treatment.Route, Subject.Race, Treatment.Time_elapsed, Treatment.Dosage, Subject.Age, Treatment.Drug 
Text: {0} 
Answer:
 3 RA patients: Subject; 3: Subject.Population; a lymphocyte alveolitis with a predominance of CD4+ T cells: Effect; pneumonitis: Effect; CD8+ T cells with a concomitant increase in neutrophils: Effect; MTX: Treatment; RA: Treatment.Disorder; MTX: Treatment.Drug