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Table 2 Statistics of gene induction under various conditions

From: Hypoxia-activated genes from early placenta are elevated in Preeclampsia, but not in Intra-Uterine Growth Retardation

Category    Normoxia (plates 1–9) Hypoxia (plates 10–24) Chi2 Observations
A Full-Term Placenta Observed 12 26   
   Expected 14,25 23,75 0,451 38
B Early+Full-Term Placenta Observed 9 31   
   Expected 15 25 0,050 40
C PE+RCIU Observed 9 37   
   Expected 17,25 28,75 0,012 46
D PE+RCIU and isolated PE Observed 10 10   
   Expected 7,5 12,5 0,248 20
E RCIU Observed 6 9   
   Expected 5,625 9,375 0,841 15
F Isolated PE Observed 2 35   
   Expected 13,875 23,125 0,000 37
G Early Term Placenta Hypoxia 48 h Observed 45 36   
   Expected 30,375 50,625 0,001 81
  1. Each category (A-G) corresponds to a cluster of genes observed in figure 3 (a-b). The expected values were calculated from the proportion of clones in each subtracted library. Significant Chi2 values are represented in bold characters