To investigate the virological properties of a SARS-CoV-2 variant, Omicron BA.1, we generated chimeric recombinant viruses that express GFP and encodes a variety of S genes. To verify the genome seque
We have determined the DNA sequence of the unique long (UL) region and the repeat long (RL) region in the genome of serotype 1 GA strain of Marek's disease virus (MDV), a member of the α-herpesvirus f
The PRV str. Becker genome (GenBank JF797219.1) was cloned as a BAC using the pBLueLox plasmid generating the BAC pBecker2 that produces the vBecker2 virus by transfection. In this way were build BAC9
To investigate the effect of each mutation, observed in SARS-CoV-2 Omicron BA.2 compared to Omicron BA.1, on viral properties, we prepared recombinant viruses harboring each mutation. To verify the ge