Fig. 7.

Phase contrast images corresponding to Fig. 6 under (a)-(c) vertical line illumination and (e)-(g) horizontal line illumination. The orange lines indicate the orientation of the line illumination. (d) and (h) show the $6^{\circ }$ TR images from (c) and (g) with the 360 cone centers marked with red spots for direct comparison also compared to Fig. 6(d) and (h). The scale bar is 20 $\mu$ m.