[biological_process] dorsal/ventral axis specification, ovarian follicular epithelium <sep> dorsal/ventral pattern formation <sep> follicle cell of egg chamber migration <sep> germarium-derived egg chamber formation <sep> intracellular mRNA localization <sep> mRNA export from nucleus <sep> mRNA splicing, via spliceosome <sep> negative regulation of RNA splicing <sep> negative regulation of translation <sep> nuclear-transcribed mRNA catabolic process, nonsense-mediated decay <sep> oocyte anterior/posterior axis specification <sep> oocyte localization involved in germarium-derived egg chamber formation <sep> oocyte microtubule cytoskeleton organization <sep> oogenesis <sep> pole plasm mRNA localization <sep> pole plasm oskar mRNA localization <sep> regulation of alternative mRNA splicing, via spliceosome <sep> regulation of gene expression <sep> RNA export from nucleus