E1C3T1O1D2E1R1M3S1
14 points
ECTODERMS is validvalid
ECTODERM, the outermost germ layer of an embryo [n]
ECTODERM, the external layer of an embryo, also EXODERM [n]
ECTODERM, the outermost germ layer of an embryo [n]
ECTODERM, the external layer of an embryo, also EXODERM [n]