Comparison in four different stellar mass bins of the observed [OIII] line profile of pure SF (gray curves) and SF-AGN galaxies (color curves) in the HII sample, classified according to the BPT classification of Stasinska et al. (2006). The line profile of the pure SF galaxies does not change as a function of the SF level. For this reason, in each mass bin, we only show a single curve concerning one level of SFR. The line profile of the SF-AGN galaxies tends to increase in width at increasing SFR as indicated by the several curves color-coded as a function of the SFR.