part of part_of develops from unilaminar epithelium 单层上皮 primordium 原基 pre-chordal neural plate 前弦神经板 eye primordium 眼原基 Portion of tissue that is part of the anterior neural keel and will form the optic vesicle[ZFA]. A paired ectodermal placode that becomes invaginated to form the embryonic lens vesicles. eye anlage eye field eye placode occular primordium ocular primordium optic field optic placode optic placode of camera-type eye optic placodes optic primordium 是前神经龙骨一部分的组织部分将形成视泡囊[ZFA]。成对的外胚层基板，内陷形成胚胎晶状体囊泡。 相机型眼的眼基板 眼原基 眼原基(occular primordium) 眼原基(ocular primordium) 眼基板(optic placode) 眼基板(optic placodes) 眼球基板 眼睛附件 眼部区域(eye field) 眼部区域(optic field) embryonic tissue 胚胎组织 presumptive structure 推定结构 ecto-epithelium 外胚上皮