"ectoblast"@en-us . "101463739"^^ . "100988748"@en-us . . . "0"^^ . . . . "ectoderm"@en-us . . . "exoderm"@en-us . . "101387058"@en-us . . . . "the outer germ layer that develops into skin and nervous tissue"@en-us . "0"^^ . "01463739-n"^^ . . . "the outer germ layer that develops into skin and nervous tissue"@en-us . . . "ectoderm"^^ .