title: Evidence for two active X chromosomes in germ cells of female before meiotic entry.
mesh_terms: D005260:Female; D005333:Fetus / Q000648:ultrastructure; D005954:Glucosephosphate Dehydrogenase / Q000235:genetics; D006801:Humans; D066298:In Vitro Techniques; D007527:Isoenzymes / Q000235:genetics; D008297:Male; D008540:Meiosis; D010641:Phenotype; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D012730:Sex Chromosomes / Q000502:physiology*; D014960:X Chromosome / Q000502:physiology*
chemical_list: D007527:Isoenzymes; D005954:Glucosephosphate Dehydrogenase