diff --git a/6_dea/dea.Rmd b/6_dea/dea.Rmd
index 9007425b9adbba810a56010c51579ae93773d999..bb790f7c5f50b2062860dd857b5184b15c306231 100644
--- a/6_dea/dea.Rmd
+++ b/6_dea/dea.Rmd
@@ -21,26 +21,12 @@ classoption: aspectratio=169
 
 ## Program
 
-1. Single-cell RNASeq data from 10X Sequencing (Friday 3 June 2022 - 14:00)
-2. Normalization and spurious effects (Wednesday 8 June 2022 - 14:00)
-3. Dimension reduction and data visualization (Monday 13 June 2022 - 15:00)
-4. Clustering and annotation (Thursday 30 June 2022 2022 - 14:00)
-5. Pseudo-time and velocity inference (Friday 8 July 2022 - 14:00)
 6. Differential expression analysis (Monday 11 July 2022 - 15:30)
-
-## Program
-
-1. Single-cell RNASeq data from 10X Sequencing (Friday 3 June 2022 - 14:00)
-2. Normalization and spurious effects (Wednesday 8 June 2022 - 14:00)
-3. Dimension reduction and data visualization (Monday 13 June 2022 - 15:00)
-4. Clustering and annotation (Thursday 30 June 2022 2022 - 14:00)
-5. Pseudo-time and velocity inference (Friday 8 July 2022 - 14:00)
  - Parametric versus non-parametric testing
  - Differential expression analysis between groups
  - Regression analysis
  - Multiple testing
  - Multivariate Differential expression analysis
-6. Differential expression analysis (Monday 11 July 2022 - 15:30)
 
 # Hypothesis testing
 
@@ -58,8 +44,9 @@ classoption: aspectratio=169
   \item $H_1$: the gene pression is not the same between the $2$ groups
 \end{itemize}
 
+
 \begin{center}
-  \bf We reject $H_0$ with a given risk $\alpha$ and a power $\beta$
+  {\bf We reject $H_0$ with a given risk $\alpha$ and a power $\beta$}
 \end{center}
 
 ## Hypothesis testing
@@ -74,11 +61,10 @@ classoption: aspectratio=169
 ## Hypothesis testing
 
 \begin{center}
-  \href{https://en.wikipedia.org/wiki/Power_of_a_test#/media/File:Statistical_test,_significance_level,_power.png}{
+  \href{https://en.wikipedia.org/}{
     \includegraphics[width=0.6\textwidth]{img/alpha_beta.png}
   }
 \end{center}
-
 # Parametric versus non-parametric testing
 
 # Differential expression analysis between groups