"germ theory, in medicine, the theory that certain diseases are caused by the invasion of the body by microorganisms, organisms too small to be seen except through a microscope."
https://www.britannica.com/science/germ-theory
"Most often, the bloodstream is the vehicle for carrying medicines throughout the body"
https://www.livescience.com/45241-medicine-journey-through-body-nigms.html
Pleomorphic Nature of Viruses
"While researching with his microscopes, Rife observed that viruses “are released from bacteria just as a chicken lays an egg”. He also observed the pleomorphic nature of viruses. One virus form could change into another virus form, and back into its original form, depending upon the medium in which it grew.
Rife stated that the chemical constituents of a virus enact upon an unbalanced cell metabolism in the body could produce any disease that may occur. He could reproduce all the symptoms of a disease chemically without inoculating any virus or bacteria into the test animals. Rife also isolated a microbe he named the BX cancer virus (though not a virus by today’s standards) which he was able to use to reproduce cancer."
https://blog.essense-of-life.com/royal-rife-frequencies-rife-machine/#.Yv5xDpIpA0M
"The SARS-CoV-2 virion is an enveloped and pleomorphic particle with a diameter of around 60–100 nm (ref. 3)."
https://www.nature.com/articles/s41564-021-00958-0