Table 2

Statistics of gene induction under various conditions

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

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

Vaiman et al. BMC Genomics 2005 6:111   doi:10.1186/1471-2164-6-111