Permeability of antipyrine, creatinine, erythropoietin and viability characteristics of perfused placentas used in the studya.

aAll values shown fall within the range of values for previous placental perfusion studies without any experimental interventions [38].
bExperiment number (each represents a complete perfusion experiment with different placentas.
cMeans±SD are shown for all phases of the experiment. For placenta 4 only one phase is shown.

a. 所有展示的数值均处于既往未施加任何实验干预的胎盘灌注研究的数值范围内[38]。
b. 实验编号（每个编号代表一项使用不同胎盘完成的完整灌注实验）。
c. 实验各阶段均以平均值±标准差（Mean±SD）的形式展示。针对胎盘4，仅展示了一个实验阶段。