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Embryo Grades-Morphology

 

embryo embryo
Grade 1: Symmetrical blastomeres, no fragments
Correct stage of development.
embryos frags Grade 2: Slight asymmetrical blastomeres, < 10% fragmentation. Correct stage of development.

 

grade3 3b
Grade 3: Asymmetrical blastomeres and or up to 30% fragmentation. Slow development
emby grade4 Grade 4: Grossly asymmetrical blastomeres and or >30% fragmentation. Developmental arrest PN stage
embryon embryo-pics
Grade 5: Degenerate embryo-100% fragmentation or atrophic embryo

 

 

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