diff --git a/TeachingMaterials/multiple_sequence_alignment.md b/TeachingMaterials/multiple_sequence_alignment.md
index 53eeb6e5e10bb61cf20f6df89450381a5a4ce044..27becb5635f7fed649bf61f8e9738141cb8ea07f 100644
--- a/TeachingMaterials/multiple_sequence_alignment.md
+++ b/TeachingMaterials/multiple_sequence_alignment.md
@@ -15,10 +15,10 @@ Clustal omega is the current version of the MSA tools from clustal series. It us
 
 The progressive alignment combines all the pairwise alignments in two stages: a first stage in which the relationships between the sequences are represented as a tree (clustering), called a guide tree, and a second step in which the MSA is built by adding the sequences sequentially to the growing MSA according to the guide tree. 
 
-Availability: 
+**Availability:**
 - Clustal Omega can be used via the web interface available at http://www.ebi.ac.uk/Tools/msa/clustalo/.
 
-Input: 
+**Input:**
 - It requires protein accession IDs or protein seqences in FASTA format. 
 
 [Frequently asked questions](http://www.ebi.ac.uk/Tools/msa/clustalo/help/faq.html#1)