TABLE 1.

Cell Types of the VZ in Human Fetuses

Cell Type	Function	Basal Process	Cilia	Immuno-histochemical Markers	Predominant Ventricle Wall Locationa	Figures
1	Uncommitted NSCb	Long radial	One	GFAP+, AQP 4+, βIV-tub-	Lateral and dorsal	2, 7, Sup 2–5
2	Early pre-ependymal NSC	Long radial	One	GFAP+, βIV-tub+	Lateral and dorsal	7, Sup 2, 3
3	Late pre-ependymal NSC	Long radial	One	GFAP-, βIV-tub+	Lateral and dorsal	2, 7, Sup 3
4	Committed early ependyma	Short	None	GFAP+, βIV-tub+	Lateral and medial	6, 7, Sup 2
5	Immature ependyma	Short	Multi	GFAP+, βIV-tub+	Medial	6, Sup 2–5
6	Immature ependyma	Short	Multi	GFAP−, βIV-tub+	Medial	6, 7, Sup 4
7	Mature ependyma	None	Multi	GFAP−, βIV-tub+	Medial	7, Sup 5

^aDuring the second half of gestation.

^bNSC, also regarded as radial glia.

GFAP+, glial fibrillary acidic protein-positive; βIV-tub+, βIV-tubulin-positive. βIV-tubulin is a component of the cilium microtubules. Sup, Supplementary Data figures.