TABLE 1.
Virus strains used in this study
| Strain | Genotypea | Comments | Reference |
|---|---|---|---|
| BaBlu | gG, ΔgI, ΔgE, ΔUS9, ΔUS2, gC,b Ul21,b gM,b others? | Expresses lacZ gene at gG locus | 49 |
| BeBlu | gG | Expresses lacZ gene at gG locus | This study |
| PRV-91Blu | gG, ΔgE | Expresses lacZ gene at gG locus; isogenic with BeBlu | This study |
| PRV-98Blu | gG, ΔgI | Expresses lacZ gene at gG locus; isogenic with BeBlu | This study |
| PRV-99Blu | gG, ΔgE, ΔgI | Expresses lacZ gene at gG locus; isogenic with BeBlu | 26 |
a
gG was inactivated by insertion of the lacZ gene as described in Materials and Methods. The prefix “Δ” indicates that the gene is deleted in the strain.
b
Point mutations have been identified in the gene (see text).