Quantitative observations that underlie the data summarized in the figures.

XLXS file containing raw data of all replicates for each figure and supplementary figure appearing in-text. The file is divided into sheets named after the corresponding figure or panel. In the file, SD stands for standard deviation, which is used as a measurement for the statistical error. Statistical comparison between groups in graphs depicting N-Cap incidence and violin plots was performed by unpaired Student t test (for normal distributions) or Mann-Whitney’s u test (for non-Gaussian distributions), considering two-tailed p-values exceeding 0.05 to be not significant. Statistical comparison between groups in graphs accounting for number of foci was performed by chi-squared test. (XLSX)