diff --git a/microorganisms-roots.txt b/microorganisms-roots.txt
index e938833b3368a140526d8a5377ce13c27d9f725b..01cceb974e0b646621564679c97a3fb8843a5c9c 100644
--- a/microorganisms-roots.txt
+++ b/microorganisms-roots.txt
@@ -26,3 +26,9 @@ Microbiological Phenomena	D008827	G06
 Microbiology	D008829	H01.158.273.540		
 Microbiological Techniques	D008828	E05.200.875,E01.370.225.875		
 Attachment Sites, Microbiological	D001287	G05.360.340.024.079		
+Dysbiosis  D064806	C23.550.308		
+Metagenome D054892	G05.360.340.550		
+Genome, Microbial	D064349	G05.360.340.358		
+Bacterial Structures	D056226	A20		
+Fungal Structures	D056229	A19		
+Viral Structures	D056224	A21