RNASE3 and asthma: ECP protein levels were significantly lower in medium containing eosinophils from the asthma group (827.7 ± 118.3 pg per 1 mL in co-cultures with control eosinophils, and 865.2 ± 123.5 pg per 1 mL of growth medium in co-cultures with ASM cells and eosinophils incubated with the negative control GRADSP).