Among the germ layers and developmental structures below: What is/are the FORMED ANATOMICAL ORGAN/PART (of the infant)?  Indicate if it disappears or dissolved in the process of development. •amniotic cavity •blastula •cleavage •ectoderm •embryoblast •embryonic disc •endoderm •epiblast •fertilization •gametes •gastrulation •hypoblast •intermediate mesoderm •lateral plate mesoderm •mesoderm •morula •neural crest cells •neurulation •notochord •occipital somites •paraxial mesoderm •primitive node •primitive streak •trophoblast •yolk sac

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