PBT2 and zinc work together to fight antibiotic resistance, page-12

Hi Pivalde, 

in article it states: 

”PBT2-zinc were also tested for the safety in human cells, and it was observed that cell viability remained unaffected by the treatment. This combination was also found to be effective in treating a murine wound infection by reducing the bacterial burden upon topical treatment. It was thus shown that the zinc and PBT2 combination was capable of fighting infections by breaking the antibiotic resistance in the bacteria. With this combination, antibiotic resistance can be reversed in a way that allows ineffective antibiotics to become effective again in treating infectious diseases.”

Would you know how they tested human cells ? You would have thought they would need to do human trials for the murine would infection...