果实外形也有明显不同。蜡梅果实是坛状或倒卵状椭圆形，种子藏在果实里，果实剥开后，内部种子乍看之下像红豆。而梅花的果实是近球形，有缝合线，被柔毛。
二是优化生物样本采集要求。更新了监测人群的确定原则，新增了生物安全、采样空白、样本分装、样本接收、样本入库等关键环节的质量控制要求，并对血样和尿样的采集方式进行了调整优化，同时删减了脂肪、粪便、呼出气及其他组织等样本采集的相关内容。
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