Cell lineage of regularly developing sea urchin embryo: No2u

Cell name

 No2u

Cleavage number

 5

Number of cells after cleavage

 32

Cleavage direction (with respect to the A/V axis)

 horizontal

Mother cell

 No2

Sister cell

 No2l

Progeny

 No2uu, No2ul

Tier

 an1

Prospective territory

 Oral ectoderm
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