The following information accompanied stocks donated to the Bloomington Stock Center by Steve Cohen, Institute of Molecular and Cell Biology, Singapore. The deletion used in FBrf0227064 which removes the mir-310, mir-311, mir-312 and mir-313 miRNAs (Df(2R)mir-310-311-312-313) was generated by Dagmar Hipfner by imprecise excision of P{EP}EP2587.