口腔自我取样说明 (舌苔, 唾液) samples At present, it is very popular to collect saliva samples for testing. Saliva sample collection is a method to obtain deoxyribonucleic acid, which will not cause harm or pain to human body. 唾液中含有大量唾液细胞DNA, 可以大大扩展基因研究的采样范围. Collecting …