diff --git a/content/3.defense-systems/drt.md b/content/3.defense-systems/drt.md
index f8d11e8430ad2c260e8f49d61ff921dc8c1c3421..75c770a963fdc62dcf5aec5f61f753c5bb6c8003 100644
--- a/content/3.defense-systems/drt.md
+++ b/content/3.defense-systems/drt.md
@@ -210,7 +210,7 @@ Escherichia coli
     Origin_3[ RT UG15 Type 4
 Escherichia coli 
 <a href='https://ncbi.nlm.nih.gov/protein/GCK53192.1'>GCK53192.1</a>] --> Expressed_3[Escherichia coli]
-    Expressed_3[Escherichia coli] ----> T5 & T3 & T7 & Phi-V1 & ZL19
+    Expressed_3[Escherichia coli] ----> T5 & T3 & T7 & Phi-V1 & ZL-19
     Gao_2020[<a href='https://doi.org/10.1126/science.aba0372'>Gao et al., 2020</a>] --> Origin_4
     Origin_4[ RT UG16 Type 5
 Escherichia coli  
@@ -274,12 +274,12 @@ end
         T3
         T7
         Phi-V1
-        ZL19
+        ZL-19
         T5
         T3
         T7
         Phi-V1
-        ZL19
+        ZL-19
         T2
         T2
         T5