Fig. 6From: Rapid dissemination of alpha-synuclein seeds through neural circuits in an in-vivo prion-like seeding experimentDifferent modes of a-syn transmission and propagation. a Schematic representation of the step-by-step mode, whereby misfolded a-syn propagation forms aggregates, and then seeds are released in a neuron, and finally the seeds are transmitted to a connected neuron via the synapse. b Schematic representation for the dissemination mode, whereby seeds are disseminated transneuronally and induce the propagation of misfolded a-syn to form aggregates in the disseminated areas. a-Syn seeds are transmitted trans-synaptically, indicating inhibition due to injection of BoNT/BBack to article page