I wrote this article, I searched a little, the Internet has a similar claim to the article not too much. These articles are generally saying that semen has a mysterious substance called seminal cytoplasm, which can kill all kinds of common pathogenic bacteria, what staphylococcus, streptococcus, E. coli …… are not in the picture. Some even describe in great detail the regular entry of semen into the vagina, gradually reaching the uterus and even the fallopian tubes through the cervix, and then playing a beneficial sterilizing effect on these parts. I’m surprised that the vagina has resident bacteria and the rest of the body is sterile, so what bacteria to kill? What disinfection? If semen is so powerful, then when it comes to various infectious gynecological and male diseases, should doctors ask patients to apply semen to the affected area three times a day? Nowadays, antibiotics are so expensive, but there is such a natural and powerful antibacterial medicine. It’s amazing! However, if I just casually spit out this, it will look like I am not decent ah. In the attitude of science to everything, I started a secret inquiry on the matter like a detective. After spending 3 nights visiting websites and databases, I can now finally tell you my big discovery! I didn’t know that there was a study on this. Around the beginning of 2001, the idea that semen is sterilizing began to circulate widely on the Internet. It was so topical that it naturally exploded on the Internet, but suspiciously, the article did not give the original source. As always, I already felt that something was wrong, and this was exactly the same as a rumor! But rumors don’t stop my desire to know, after all, rumors are often derived from distorted facts. I found the first scientist who discovered that semen was antibacterial. This old, gray-haired scientist from India (across the screen) shook my hand and told me how this study, done 40 years ago, had found that semen had a powerful antibacterial effect, and eventually extracted seminalplasmin, the active antibacterial ingredient, from it. That year, the study was also published in the prestigious scientific journal Nature. The plot was about to be reversed. Within a few years, other scientists summarized studies on the antibacterial activity of semen, suggesting that some molecules in semen other than seminalplasmin also have antibacterial activity. However, these studies were in vitro experiments and there was no evidence that semen, or the components in it, could actually exert antibacterial effects in the body in its natural state. Fortunately, the evidence was not so strong that I almost thought I was going to be late to the party. So I continued my search for relevant findings. After further research, that Indian scientist found that what he called seminal cytokinin was actually the same substance as something called calcium inhibitor found in some other studies. Calcium ions play an important role in the fertilization process, and this scientist hastily wrote at the end of his paper that we are now studying the role of seminal cytoplasm in the regulation of the fertilization process. When I saw this, I instantly panicked. What about the promised research on antibacterial effects? Why did we go to study fertilization without any warning? With a painful feeling, I hoped to find follow-up studies by other scientists on the antimicrobial effect of semen. And sure enough, I found it. Hopefully, I opened a paper written by a disciple of this old scientist called Seminal Cytokinins. It discusses its antibacterial and female-protection-related ideas, and here is a translation for you.