FIGLA and cyst: We recently demonstrated in zebrafish that the loss of Figla (figla−/−) prevented cyst breakdown as no individual follicles could form in the mutant, suggesting an important role for Figla in controlling the transition from the cystic oocytes at prefollicular chromatin nucleolar (CN) stage (stage IA) to individual follicles with perinucleolar (PN) oocytes (stage IB).