2.1 Ethics Statement
Six-week-old specific pathogen-free (SPF) female BALB/c mice were
purchased from Hangzhou Paisiao Biotechnology Co., Ltd., and all mice
were in good health. Animal studies were conducted in strict accordance
with the recommendations of the Institutional Animal Care and Use
Committee (IACUC), and the animal protocols were approved by the Animal
Experimentation Ethics Committee of the School of Medicine, Hangzhou
City University.