Smith took saliva samples from 175 adults known to be at risk of cardiovascular disease.

史密斯采集了175名已知有心血管疾病风险的成年人的唾液样本。

To enter Japan, travelers need to get a certificate that proves negative results for COVID-19 from nasal swab testing or saliva samples.

入境日本的旅客需持有鼻咽或唾液样本的新冠病毒检测呈阴性的证明。

Saliva samples and tongue swabs revealed that after the couples puckered up, about 80 million bacteria from the drink moved mouth to mouth.

而后的唾液样本及舌头化验显示，在情侣接吻后这种饮品中的8千万个细菌通过嘴进行了传递。

So they selected five choir groups in Wales—with a total of 193 singers—and took saliva samples both before and after an hour of singing.

因此这些研究人员从威尔士193名合唱队成员中挑选出5人，并分别采集了唱歌前后人们的唾液样本。

By sending a saliva sample — and a fee, of course — anyone can receive a report containing information such as where their ancestors were from and who they are related to.

任何人只需发送唾液样本——当然也需要付费——就能收到一份报告，其中包含他们祖先来自哪里以及他们与谁有血缘关系等信息。

After male volunteers were randomly assigned to smell either one of the worn shirts, or a new unworn one, saliva samples showed an increase in testosterone in those who had smelled a shirt worn by an ovulating woman.

之后，男性志愿者被随机抽取去闻一件穿过的T恤，或者一件新的没穿过的。唾液样本显示那些闻过排卵期女性穿过的T恤的男性睾丸素分泌有明显的增加。