Enhancer trap expression is detected at embryonic stage 12 in cells which appear to be progeny of the lateral glioblast. Those cells migrate medially and divide. By the end of embryogenesis, enhancer trap expression is observed in most glial cells except the midline glia. Expression is also seen in the dorsal leading edge cells of the lateral ectoderm.
"FBti0009142 == P{lacZ}loco3-109" was stated as revision.