Table 1.

Microglial responses in the SN

Group	n	Microglia response
Control	4	•
6-OHDA	4	+ + +
		+ + +
		+ +
		+ + +
Exos-T	4	+
		+
		+ +
		+
Exos-LV	4	+ +
		+
		+
		+

Baseline “resting” morphology (•), and mild (+), moderate (+ +), and intense responses (+ + +); Exos-T and Exos-LV indicate the 6-OHDA-induced PD model treated with Exos injection through the tail or lateral ventricle, respectively. All scores pertain to the lesioned side. 6-OHDA: 6-Hydroxydopamine; Exos: exosomes; SN: substantia nigra.