Immunization Dose-Dependent In Vivo Replication Kinetics and Protective Efficacy of the Gene-Deleted Marek’s Disease Vaccine SC9-1
In this study, we evaluated the replication kinetics and protective efficacy of the gene-deleted Marek’s disease (MD) vaccine strain SC9-1 in specific-pathogen-free (SPF) chickens immunized with different doses. Chickens were divided into two groups: one group received a high dose (5000 PFU) and the other a low dose (5...