Which of these statements can NOT be inferred from the passage?

The statement "These new polymers are completely safe to use in humans and will defend against all antibiotic-resistant pathogens" cannot be inferred from the passage. The passage provides information about the effectiveness of the star-shaped peptide polymers in killing Gram-negative bacteria and superbugs, as well as their non-toxicity to red blood cells. However, it does not explicitly state that these polymers are completely safe for use in humans or that they will defend against all antibiotic-resistant pathogens. Further research and testing would be necessary to determine their safety and effectiveness against various pathogens.