Widefield fluorescence imaging: The acquisition of widefield fluorescence images was performed with a custom-built, confocal microscope, equipped with a supercontinuum laser source (SuperK Extreme EXB-4, NKT Photonics) and a multi-channel tunable filter accessory (AOTF SuperK SELECT UV/VIS-nIR, NKT Photonics), controlled by the NKT Photonics CONTROL 1.2 software. Suitable long-pass filters were used to exclude the excitation laser wavelength from the detected signal. Widefield illumination was achieved by a lens (Ø1" UVFS Plano-Convex Lens, f = 150.0 mm, ARC: 350 -700 nm, Thorlabs LA4874-A-ML), focused on the back focal plane of the objective (alpha Plan-Fluar 100x/1,49 Oil M27, Carl Zeiss AG, Germany). After light collection, a second lens (Biconvex lens; N-BK 7; D=25.4; F=100; mounted, Qioptiq G063854000) was used to focus the sample's fluorescence on the detection camera (ORCA-Flash4.0 V2 camera, Hamamatsu Photonics). Image acquisition was controlled by the camera software (HoKaWo 3.0). Each recording was manually stopped after cell death.