Distribution of host galaxy axial ratios of INTEGRAL AGN differentiated into broad lines or type 1 i.e. Sy 1−1.2−1.5 (upper and lower left panels), and narrow lines or type 2 i.e. Sy 1.8−1.9−2 (upper and lower right panels). Lower panels: the morphological type of our sample sources has been considered; histograms in dotted red lines refer to AGN hosted in late type (spirals) galaxies, blue dashed lines refer to AGN hosted in early (elliptical and S0) galaxies, and black solid lines refer to host galaxies for which no morphological type has been found in the literature.