diff --git a/content/3.defense-systems/shedu.md b/content/3.defense-systems/shedu.md
index 7ffbd2418db40c744d41de8ee35bc589f2038ac8..b26a2440b82a1ff77bff1ca211842bae1dfc5a7f 100644
--- a/content/3.defense-systems/shedu.md
+++ b/content/3.defense-systems/shedu.md
@@ -21,15 +21,15 @@ relevantAbstracts:
 # Shedu
 
 ## Description
-The Shedu antiphage system consists of a single protein, SduA, which acts as a nuclease with a conserved DUF4263 domain belonging to the PD-(D/E)XK nuclease superfamily. The system was named after an Assyrian Mythical Deity. The N-terminal domain is very diverse including diverse nucleic acid binding, enzymatic,and other domains. 
+The Shedu antiphage system consists of a single protein, SduA, which acts as a nuclease with a conserved DUF4263 domain belonging to the PD-(D/E)XK nuclease superfamily. The system was named after an Assyrian Mythical Deity. The N-terminal domain is very diverse including diverse nucleic acid binding, enzymatic, and other domains. 
 
 
 ## Molecular Mechanism
 The Shedu protein is proposed to act as a nuclease, and its N-terminal domain inhibit its activation until triggered by phage infection.
-The activation of the protein was described in :ref{doi=10.1101/2023.08.10.552793}
+The activation of the protein was described in :ref{doi=10.1101/2023.08.10.552793}.
 In B. cereus Shedu, *"a key catalytic residue in Shedu’s nuclease domain is sequestered away from the catalytic site. Activation involves a conformational change that completes the active site and promotes assembly of a homo-octamer for coordinated double-strand DNA cleavage. Removal of Shedu’s N-terminal domain ectopically activates the enzyme, suggesting that this domain allosterically inhibits Shedu in the absence of infection."* 
 The nuclease activity and specific sensing of an E. coli Shedu was described in :ref{doi=10.1101/2023.08.10.552762}
-*"The N-terminal domains of SduA form a clamp that recognizes free DNA ends. nd binding positions the DNA over the PD/ExK nuclease domain, resulting in dsDNA nicking at a fixed distance from the 5’ end. The end-directed DNA nicking activity of Shedu prevents propagation of linear DNA in vivo"*. In E. coli, T6 phages can escape Shedu immunity by suppressing their recombination-dependent DNA replication pathway.
+*"The N-terminal domains of SduA form a clamp that recognizes free DNA ends. End binding positions the DNA over the PD/ExK nuclease domain, resulting in dsDNA nicking at a fixed distance from the 5’ end. The end-directed DNA nicking activity of Shedu prevents propagation of linear DNA in vivo"*. In E. coli, T6 phages can escape Shedu immunity by suppressing their recombination-dependent DNA replication pathway.
 
 
 ## Example of genomic structure