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Table 1.

Physiological range of the partial pressure of oxygen(PO2) and pH of arterial and venous CAM blood from embryos incubated in 35°C and 38°C

Chorioallantoic arterial blood
Chorioallantoic venous blood
Temperature (°C)Stage (HH)PO2 (kPa)pHPO2 (kPa)pH
35 41-42 3.4±0.3(7)1 7.39±0.05 (6) 8.1±0.3 (8) 7.42±0.04 (7) 
35 43-44 2.8±0.3 (7) 7.52±0.03 (7) 7.4±0.3 (7) 7.48±0.05 (7) 
38 41-42 4.3±0.3(8)1, 7.46±0.07 (9) 9.1±0.4 (11)* 7.34±0.04 (10) 
38 43-44 2.4±0.2(10) 7.54±0.05 (10) 7.7±0.4 (10)* 7.42±0.04 (10) 
Chorioallantoic arterial blood
Chorioallantoic venous blood
Temperature (°C)Stage (HH)PO2 (kPa)pHPO2 (kPa)pH
35 41-42 3.4±0.3(7)1 7.39±0.05 (6) 8.1±0.3 (8) 7.42±0.04 (7) 
35 43-44 2.8±0.3 (7) 7.52±0.03 (7) 7.4±0.3 (7) 7.48±0.05 (7) 
38 41-42 4.3±0.3(8)1, 7.46±0.07 (9) 9.1±0.4 (11)* 7.34±0.04 (10) 
38 43-44 2.4±0.2(10) 7.54±0.05 (10) 7.7±0.4 (10)* 7.42±0.04 (10) 

Values are means ± 1 s.e.m., with sample size in parentheses.

1

A significant difference between incubation temperatures(P<0.05).

*

A significant difference between stages for 38°C embryos(P<0.05).

A significant difference between stages for 38°C embryos(P<0.001).

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