Image copyright Thinkstock Image caption Scientists asked couples to kiss for exactly 10 seconds.
Microbial museum, the Dutch scientists worked in collaboration with the museum Micropia, the world's first museum of microbes, based in Amsterdam.But while bacteria in the saliva seemed to change quickly in response to a kiss, bug populations on the tongue remained more stable.Studies suggest the mouth is home to more than 700 different types of bacteria - but the report reveals some are exchanged more easily than others.French kissing is a great example of exposure to a gigantic number of bacteria in a short timeProf Remco Kort, Lead researcher.Scientists say these populations may be essential for health and the prevention of disease.Prof Remco Kort, who led the research, said: "French kissing is a great example of exposure to a gigantic number of bacteria in a short time.Locked lips, a team from the Netherlands Organisation for Applied Scientific Research (TNO) asked 21 couples a series of questions to assess their kissing habits, including how frequently they had kissed in the last year and when they last locked lips.They monitored the kissing behaviour of 21 couples and found those who kissed nine times a day were most likely to share salivary bugs.The research is published in the journal Microbiome.One member of the couple then drank a probiotic drink, containing an easily identifiable mixture of bugs."Further research should look at the properties of the bacteria and the tongue that contribute to this sticking power."But only some bacteria transferred from a kiss seemed to take hold on the tongue.In a newly opened exhibition, couples are invited to share a kiss and are provided with an instant analysis of the bugs they have exchanged.A growing number of researchers are looking at the microbiome - an ecosystem of some 100 trillion micro-organisms that live in and on our bodies.A single 10-second kiss can transfer as many as 80 million bacteria, according patroon jurk voor kort achter lang to Dutch scientists.Scientists took bacterial samples from the volunteers' tongues and saliva before and after a strictly timed 10-second kiss."These types of investigations may help us design future bacterial therapies and help people with troublesome bacterial problems.".Image copyright Micropia Image caption The kiss-o-meter is an interactive exhibit at Amsterdam's kortingscode voor de bijenkorf museum of microbes.On the couple's second kiss, scientists were able to detect the volume of bacteria transferred to the other partner - on average 80 million bacteria in a single 10-second kiss.