diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..41945a10c3a11919bf6647d1faba8b85824f51cd
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,56 @@
+# ----- macos rules -----
+# taken from https://github.com/github/gitignore/blob/main/Global/macOS.gitignore
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+# Icon must end with two \r
+Icon
+# Thumbnails
+._*
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+# ----- windows rules -----
+# taken from https://github.com/github/gitignore/blob/main/Global/Windows.gitignore
+# Windows thumbnail cache files
+Thumbs.db
+Thumbs.db:encryptable
+ehthumbs.db
+ehthumbs_vista.db
+# Dump file
+*.stackdump
+# Folder config file
+[Dd]esktop.ini
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+# Windows Installer files
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
+# Windows shortcuts
+*.lnk
+# ----- linux rules -----
+# taken from https://github.com/github/gitignore/blob/main/Global/Linux.gitignore
+*~
+# temporary files which can be created if a process still has a handle open of a deleted file
+.fuse_hidden*
+# KDE directory preferences
+.directory
+# Linux trash folder which might appear on any partition or disk
+.Trash-*
+# .nfs files are created when an open file is removed but is still being accessed
+.nfs*
diff --git a/assays/Brilhaus2015_PE_mRNASeq/isa.assay.xlsx b/assays/Brilhaus2015_PE_mRNASeq/isa.assay.xlsx
index 878bfc3bd707e171ea35ee0de33d8c211a0dbd96..cc87d26a138c44019d757f0f83e5bd5932d5fc52 100644
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diff --git a/assays/Brilhaus2015_SE_mRNASeq/isa.assay.xlsx b/assays/Brilhaus2015_SE_mRNASeq/isa.assay.xlsx
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diff --git a/isa.investigation.xlsx b/isa.investigation.xlsx
index 219aa6f02d64a1d1fb6f498c9e1e11c2dd5cf3ef..2d7f084aca41c93bd0e534851ff2142627fe2734 100644
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diff --git a/studies/Brilhaus2015_drought/isa.study.xlsx b/studies/Brilhaus2015_drought/isa.study.xlsx
index c9b7f3fdb6eec4c1b33c782d02a45a089a492064..94a4d309873833c597ce09829e1823a282444a1e 100644
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