ANXA5 and bronchiolitis: Interestingly, when a double labeling (fluorescein Isothiocyanate-conjugated annexin V and trypan blue) analysis was performed, we found that the number of double positive platelets, i.e. apoptotic cells, was very low in both boys and girls with bronchiolitis and was comparable with that detected in HCs (mean values: 1.3 ± 0.5% vs 1.06 ± 0.7%).