Table 2.

The correlation coefficients (r) between the same stage of microarray data.

Gestation Days	EEM-COT/r value	ENDO-CAR/r value
Non-Pregnant	---	≥ 0.87
Day25	≥ 0.87	≥ 0.91
Day60	≥ 0.85	≥ 0.86
Day150	≥ 0.85	≥ 0.92
Day250	≥ 0.81	≥ 0.70

The correlations of non-pregnant, Day25, Day150, and Day250 samples were calculated at biological duplicate n = 2 and technical duplicate by reverse labeling n = 2. The correlations of Day60 samples were calculated at biological duplicate n = 3 and technical duplicate by reverse labeling n = 3. Differences were considered significant at P < 0.05.