Table 1.

Summary of clone data in this report. Abbreviations: ac, anterior commissure; pc, posterior commissure.

VG+ cluster	Proposed Lineage	Number of VG+ cells in cluster	Number of clones marking this cluster	Number of VG+ cells/ total GFP+ cells in clone	Axon extended by VG+ cell(s)?	Axonal morphology
iii	1–2	1	4	4 clones: 1 VG+/1 GFP+	yes	Anterior in ipsilateral connective, crosses ac, continues anterior in contralateral connective
iv	5–6	5 or 6 (thoracic) 4 or 5 (abdominal)	7	1 clone: 4 or 5 VG+/ 9 GFP+	yes	Turns anterior in ipsilateral connective at level of pc
				1 clone: 5 VG+/ 8 GFP+	yes	Reaches midline at level of pc
				1 clone: 3 VG+/ 3 GFP+	yes	Reaches midline at level of ac
				3 clones: 3-5 VG+/ 8 GFP+	no	Reaches midline at level of pc
				1 clone: 1-2 VG+/ 5 GFP+	no	Reaches midline at level of ac
v	Subset are 5-1	7 (thoracic) 5 or 6 (abdominal)	2	2 clones: 3 VG+ / 7 or 8 GFP+	unclear	crosses the midline in the pc, extends anteriorally in the contralateral connective
vi	mVUM	3	4	4 clones: 1 VG+/2 GFP+	yes	Axon extends to the anterior, branches, then to both sides of the midline