diff --git a/elements/neuron/presynapse.md b/elements/neuron/presynapse.md
index 6f654a5..fe3b878 100644
--- a/elements/neuron/presynapse.md
+++ b/elements/neuron/presynapse.md
@@ -7,7 +7,7 @@ include_toc: true
 Modulation:
 - is developed by: [AXON](axon.md)
 - is tuned by: ORGANISM, organs, modules
-- tunes:[VGCC_PRE](#vgcc-pre) 
+- tunes: [VGCC_PRE](#vgcc-pre) 
 
 Qui comprendiamo:
 
@@ -419,7 +419,7 @@ PossibleDownPreVgccTun
 ## VGCC-PRE
 
 Modulation:
-- is tuned by:[PRESYNAPSE](#presynapse) 
+- is tuned by: [PRESYNAPSE](#presynapse) 
 
 
 Voltage-Controlled Gated Channels: Qui per ora non gestiamo l'evoluzione della depolarizzazione. Alla scomparsa dell'AP, i VGCC smettono di funzionare.