L(left)

Cell lineage of regularly developing sea urchin embryo: L(left)

Cell name	L(left)
Cleavage number	2
Number of cells after cleavage	4
Cleavage direction (with respect to the A/V axis)	vertical
Mother cell	OL(left)
Sister cell	O
Progeny	NL(left), VL(left)
Tier
Prospective territory