背景资料概要：强直性脊椎炎改变了脊柱的强度和生物力学特性，致使其在受到微笑创伤是轻易发生骨折。
Summary of Background Data. AS alters the strength and biomechanical properties of the spine that renders it susceptible to fracture with minimal trauma.
B27协进会是由一？患有强直性脊椎炎的病友合力组织起来，在1995年成立的自助互助团体。
B27 Association is a self help group established in 1995 by a group of Ankylosing Spondylitis patients.
方法：采用PCR技术检测78例可疑为强直性脊椎炎患者样本的HLAB27基因，并与血清学结果比较。
Methods: 78 samples from patients suspected with ankylosing spondylitis (as) were genotyped by PCR and some of them were assayed by serological typing.
方法：采用PCR技术检测78例可疑为强直性脊椎炎患者样本的HLAB27基因，并与血清学结果比较。
Methods: 78 samples from patients suspected with ankylosing spondylitis (as) were genotyped by PCR and some of them were assayed by serological typing.
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