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Table 3 Ratio of nuclear DNA content to the total DNA content in gonosomal chromatin bodies (GCBs) in the placental trophoblast cells at 10th day pc

From: Quantitative investigation of reproduction of gonosomal condensed chromatin during trophoblast cell polyploidization and endoreduplication in the east-european field vole Microtus rossiaemeridionalis

Cell population Ploidy Nuclei with single GCB Nuclei with two or more GCBs
   No. of embryo No. of embryo
   1–3 1–4 1–3 1–4
Trophoblast cells of the junctional zone of placenta 2c 23.7 ± 2.0 23.6 ± 2.9 16.0 ± 1.4 -
  4c 22.2 ± 1.1 25.9 ± 1.6 14.1 ± 1.2 17.6 ± 12.2
  8c 21.3 ± 13.7 23.7 ± 2.0 16.8 ± 2.8 15.6 ± 11.5
  16c 25.2 ± 4.7 14.5 ± 3.6 13.6 ± 1.6 13.9 ± 1.8
Secondary giant trophoblast cells 32 c 21.3 ± 3.7 22.4 ± 15.3 13.8 ± 1.4 20.1 ± 16.9
  64 c 24.6 ± 2.0 23.3 ± 11.5 20.6 ± 2.9 13.6 ± 11.6
  128 c 27.1 ± 3.8 23.3 ± 11.5 20.3 ± 1.6 13.1 ± 11.3
  256 c 23.2 ± 10.9 - - -