| central nervous system |
 |
detected |
| regional | Expression domains in 3 regions: (1) dorsal midline of neural tube, (2) ventral midline of mesencephalon and part of diencephalon, and (3) met-mesencephalic region. These data are not shown. |
| spinal cord |
 |
detected |
| regional | Dorsal midline expression, from diencephalon to very caudal tip of spinal cord, with gap at cerebellar anlage (not shown). |
| hindbrain |
 |
detected |
| regional | Dorsal midline expression, from diencephalon to very caudal tip of spinal cord, with gap at cerebellar anlage (not shown). |
| diencephalon |
 |
detected |
| regional | Dorsal midline expression, from diencephalon to very caudal tip of spinal cord, with gap at cerebellar anlage. On ventral midline, sharp limit at caudal end (Wnt1-positive ring); rostral extension depends on developmental stage (not shown). |
| cerebellum primordium |
 |
detected |
| graded | Expression on edge of cerebellar anlage decreases rostrally and medially. Authors state that the midline of the cerebellar edge remains negative at least until E11.5. (not shown). |
| midbrain |
 |
detected |
| regional | On ventral midline, sharp limit at caudal end (Wnt1-positive ring); rostral extension depends on developmental stage (not shown). Ring of positive cells rostral to met-mesencephalic constriction; groove on ventricular surface of neuroepithelium marks caudal edge of ring. |