c("tissue: pancreatic islets", "cell type: Alpha", "donor id: CITH053")
c("tissue: pancreatic islets", "cell type: Alpha", "donor id: CITH068")
c("tissue: pancreatic islets", "cell type: Beta", "donor id: CITH053")
c("tissue: pancreatic islets", "cell type: Beta", "donor id: CITH068")
c("tissue: pancreatic islets", "cell type: Alpha", "donor id: CITH070")
c("tissue: pancreatic islets", "cell type: Beta", "donor id: CITH070")
c("tissue: pancreatic islets", "cell type: Exocrine", "donor id: CITH068")
c("tissue: pancreatic islets", "cell type: Exocrine", "donor id: CITH053")