Extended Data Fig. 6. Structural dynamics in repeated volumetric LIONESS acquisition over 3 days.
Corresponding orthogonal planes in xy- and xz-directions from 6 consecutive LIONESS measurements of the same volume in the neuropil of an organotypic hippocampal slice culture. The volume was initially imaged 4 times within one hour and then again after one day and after three days. Magnified views: Subregion with dendritic spines revealing morphodynamics. Scale bars, overview: 2 µm, magnified views: 500 nm. White arrowheads at image edges indicate the position of corresponding orthogonal planes. Maximum intensity projections spanning 150 nm. Additional dark regions on day 1 and day 3 likely represent branched processes of a damaged cell that took up dye after repeated manual mounting of the sample (supported by a membrane for interface tissue culture), transfer to the microscope, volumetric imaging, unmounting, and transfer back to the tissue culture incubator. The specific measurement sequence applied here was done for n = 1 sample.