IGHE and asthma: The amount of LF released by neutrophils from patients suffering of intermittent asthma without symptoms in the previous 4 weeks (n = 17) (Fig 4A), mild persistent asthma (n = 17) (Fig 4B), moderate asthma (n = 17) (Fig 4C), and severe asthma (n = 17) (Fig 4D), after incubation with allergens, was evaluated in relation to the patients’ levels of specific serum IgE.