Related to Fig. 2 . Examples for c4da neuron dendrite severing events with evidence of mechanical tearing. (A) Still images of a live movie showing a dendrite severing event. The time series to the right shows the boxed area in the left image in 1-min intervals. (B) Distance between the severed dendrite ends in A over time. (C) Still images of a similar time series covering a dendrite severing event with evidence of fast tissue movements. Black arrows indicate the position of a recently severed dendrite, red arrows indicate the direction of tissue movement. Scale bars are 50 μm in A and 10 μm in C.