SEATTLE, Wash. — A COVID-19 vaccine developed at the University of Washington Medical Center in Seattle is looking promising.

A study showed that a single dose of the vaccine, which goes by the acronym LION, was effective against the virus in mice and non-human primates.

UW Medicine says the vaccine’s components are quick to manufacture in large quantities and its design would allow it to be administered after a simple mixing step at a pharmacy.

If the vaccine meets the few next steps in its evaluation, it would enter trials in healthy human volunteers.