To normalize the number of viral particles used for infection, real time qPCR targeting the VSV-M gene was performed (S3 Fig). A confluent monolayer of cells was infected with the pseudotyped VSV bearing GPC-A168 or GPC-T168, Candid#1pv-A168, or Candid#1pv-T168, which have equivalent copies of the VSV genome. The gene discussed is GYPC; the disease is infection.