Microglia remodel synapses by presynaptic trogocytosis and spine head filopodia induction by Weinhard, L, Di Bartolomei, G, Bolasco, G, Machado, P, Schieber, N, Neniskyte, U, Exiga, M, Vadisiute, A, Raggioli, A, Schertel, A, Schwab, Y, Gross, C