Code 2 Morulas.

Code 2 Morulas.
These Code 2 morulas [Stage 4] were collected on Day 5.5. The morula on the left shows a spherical area of compacted cells occupying about 50% of the perivitelline space. The mass is surrounded by degenerate blastomeres and debris. The morula on the right shows less compaction and several clear cells.

Drost M (1984)