the mature human female not only tolerates the normal expression of the fertilized ovum during pregnancy ( sex cells , blastoderm , and trophoblast ) but also seems capable of greater differentiation of immature somatic cells resulting from parthenogenesis of one or more ova into cells of the three germ layers , as well as the suppression of the growth of neoplastic sex cells and trophoblast cells , with benign cystic teratoma as the most common culmination .
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of