The regular heparin group showed significant difference in the level of PT and APTT compared with the N-desulfated heparin group(P<0.05).

脱硫酸肝素组与普通肝素组在PT、APTT方面均存在显著性差异（P<0.05）。

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Results The regular antenatal examination rate for pregnant women was significantly lower in altitude group than in plain group(10.34% vs 94.67%, P<0.01).

结果 高原组产妇孕期定期产前检查率（10.34%） 显著低 于平原组（94.67%），P<0.01 ；

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Results Telomerase activity of peripheral blood lymphocytes was increased obviously in group with no-antihypertensive treatment, no-regular antihypertensive treatment and the control group(P<0.05).

结果未服用降压药组、长期不规则服用降压药组端粒酶活性均比对照组高（P< 0 。0 5 ） ，长期规则服用降压药组端粒酶活性与对照组比较无显著性差异（P >0 。0 5 ）。

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