H. sapiens PHTF1 and PHTF2 tissue-specific RNA expression data were obtained from the GTEx Portal (GTEx Analysis Release V8 [dbGaP Accession phs000424.v8.p2; https://gtexportal.org/home/datasets]). Tissue/life stage-specific RNA expression data of Phtf and Grl genes in D. melanogaster were downloaded from the Fly Atlas 2.0 (https://motif.mvls.gla.ac.uk/FlyAtlas2) (Krause et al., 2022 (link)) or, for the labellum, from Dweck et al., 2021 (link). D. melanogaster scRNA-seq data was from the Fly Cell Atlas (Li et al., 2022 (link)): proboscis/maxillary palp (10× stringent dataset) and testis/seminal vesicle (10× relaxed dataset), visualized as HVG tSNE or UMAP plots, respectively, in the SCope interface (https://scope.aertslab.org/#/FlyCellAtlas) (Davie et al., 2018 (link)).
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