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	free resource	FlyBase	http://flybase.org/cgi-bin/uniq.html?db=fbrf&field=pubmed_id&context=20940226
Gene Ontology annotations from this paper	free resource	Gene Ontology	http://amigo.geneontology.org/amigo/reference/PMID:20940226
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/20940226/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/20940226
NBRP resources	free resource	National BioResource Project	https://rrc.nbrp.jp/references/list?pubmed=20940226
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:20940226
	subscription/membership/fee required	Silverchair Information Systems	https://journals.biologists.com/dev/article-lookup/doi/10.1242/dev.044560