has part
has part
has_part
characteristic of
has modifier
absent ectoderm
failure of ectoderm formation
absence of the outer of the three primary germ layers of the embryo (the others being mesoderm and endoderm) that originates in the epiblast and is formed during gastrulation
MP:0013216
absence of ectoderm
abnormal ectoderm morphology
abnormal
absent
ectoderm