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XB-STAGE-5
| Name: blastula stage XAO ID: 1000003 Definition: "Embryonic stage during which the solid morula acquires an internal cavity, comprising Nieuwkoop and Faber stages 7 to 9." |  | 
| Preceded By: NF stage 6.5 | Succeeded By: NF stage 7 | 
Component Stages: NF stage 7, NF stage 8, NF stage 9
