allergen
This study assessed the effect of repeated allergen exposure on ASM and       epithelial cell deoxyribonucleic acid (DNA) synthesis, cell recruitment and       airway wall pathology.
This study assessed the  @PREDICAT$  of repeated  @SUBJECT$  exposure on  @OBJECT$  and       epithelial cell deoxyribonucleic acid (DNA) synthesis, cell recruitment and       airway wall pathology.