Teratomas may arise from the aberrant migration of
Epiblast cells form the primordial germ cells, which migrate from the region of primitive streak to the region of future gonads to form the gametes like sperm & oocyte.Abnormal remnants of epiblast/primordial germ cells at the primitive streak or their aberrant migration lead to forma on of teratomas.
Epiblast
Hypoblast
Cytotrophoblast
Syncy otrophoblast
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