The first thing the "Father of Microbiology," Anton van Leeuwenhoek, put under a microscope was semen. They understood that semen was integral to the creation of life but didn't yet understand the concept of single-cell organisms. He fully expected to see tiny little humans in his jizz.
Considering the amount of stuff I know to be BS, that I have found in IZI to date, I have a hard time believing any of this