In contrast, although rRB-1B_Meq71/77-infected chickens showed a trend toward lower thymus weight, no significant difference was observed at 7 and 14 dpi compared to the control group ( Figure 4 A).
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Amino Acid Polymorphisms in the Basic Region of Meq of Vaccine Strain CVI988 Drastically Diminish the Virulence of Marek's Disease Virus.
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