diff --git a/25-starting-with-data.md b/25-starting-with-data.md
index f43787ac8..920493f50 100644
--- a/25-starting-with-data.md
+++ b/25-starting-with-data.md
@@ -52,7 +52,7 @@ columns represent:
 | age        | The age of the mouse (all mice were 8 weeks here)                                            |
 | sex        | The sex of the mouse                                                                         |
 | infection  | The infection state of the mouse, i.e. infected with Influenza A or not infected.            |
-| strain     | The Influenza A strain; C57BL/6 in all cases.                                                |
+| strain     | The Influenza A strain.                                                                      |
 | time       | The duration of the infection (in days).                                                     |
 | tissue     | The tissue that was used for the gene expression experiment, i.e. cerebellum or spinal cord. |
 | mouse      | The mouse unique identifier.                                                                 |
diff --git a/md5sum.txt b/md5sum.txt
index faa7f75ec..e581f00ad 100644
--- a/md5sum.txt
+++ b/md5sum.txt
@@ -6,7 +6,7 @@
 "episodes/10-data-organisation.Rmd" "0477159aba8ddc4f5843f32894204543" "site/built/10-data-organisation.md" "2023-09-06"
 "episodes/20-r-rstudio.Rmd" "e79b79ff6a51ce5e2b2cc55ce32016d2" "site/built/20-r-rstudio.md" "2023-09-06"
 "episodes/23-starting-with-r.Rmd" "5ef5989f0c01ebea6a48e930ec6a5066" "site/built/23-starting-with-r.md" "2023-09-06"
-"episodes/25-starting-with-data.Rmd" "e4085154bf5a849ad4d8fbddb0293903" "site/built/25-starting-with-data.md" "2023-09-06"
+"episodes/25-starting-with-data.Rmd" "6a9fade1a456e0f87ca61fc86175e74f" "site/built/25-starting-with-data.md" "2023-09-26"
 "episodes/30-dplyr.Rmd" "30aa6b83ec8528361708410563bdbf1c" "site/built/30-dplyr.md" "2023-09-26"
 "episodes/40-visualization.Rmd" "0087460a2ed16ada100c6053b4f20e6e" "site/built/40-visualization.md" "2023-09-06"
 "episodes/60-next-steps.Rmd" "1529cdb71ed356a41d6a84c65c860fbe" "site/built/60-next-steps.md" "2023-09-06"