将抗原片用pH7.4,0.01mol/L PBS浸湿,滤纸吸干.加入用PBS作1∶5稀释的待测血清,置37℃湿盒30min,用PBS浸洗3次,每次5min,电扇吹干.滴加抗人IgG荧光抗体,37℃湿盒30min,同上法洗后吹干.用荧光显微镜检查.
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