Dornase alfa biosimilar(Eden Biologics, Inc.)

This is a double-blind, randomised, 2 single-doses and then repeated-dose (5 days), 2-arm, 2-period crossover phase 1 study in 24 healthy male or female subjects. Subjects will be randomised to one of two treatment sequences in 2 treatment periods: JHL1922 (test treatment) first and then Pulmozyme (reference treatment) or Pulmozyme (reference treatment) first and then JHL1922 (test treatment).