I’ll try this once again: two sets of the same culture in the same nutrient medium. Both are infused with the same number of virus particles. Two treatment solutions are prepared. One is a solution of B at therapeutic concentrations (2 different concentrations). The other, the placebo solution, is the solute medium only. This is not a treatment efficacy comparative study. There is no secret ingredient or known antiviral in the control. It merely establishes that by some miracle the neutral solute didn’t destroy viruses. The B solution reduced the number of virus particles by 95 and 97 percent. The control viral count remained unchanged; therefore, B is responsible for the 95 and 97 percent reduction. Again, the placebo, more accurately the control is not a comparator. It only acts to show that the only difference between the two cultures and treatments was B.
* Never borrow to invest.