Parameters defining the surface behavior of Surfacen in the absence and presence of meconium and/or HA.

A) Minimum surface tension after Initial or Post expansion adsorption of Surfacen alone or in the presence of meconium and/or HA. B) Minimum and maximum surface tension after Quasi-static (fourth cycle) or dynamic (tenth cycle) compression-expansion isotherms of films formed by Surfacen alone or Surfacen pre-mixed with meconium and/or HA. C) Percentage of area reduction required to get minimal tension by films formed by Surfacen alone or Surfacen in the presence of meconium and/or HA. Asterisk indicates that the mean is statistically different to the compared values (p<0.05) (see text).