Transduction of the TAT-conjugated PRRSV-M and PRRSV-N proteins. PK15 cells were transduced with the TAT-PRRSV-M and TAT-PRRSV-N proteins. The proteins in the cell lysates were identified by Western blotting. (A) Lane 1, standard protein marker; lane 2, the TAT-PRRSV-M-transduced cell lysate; lane 3, PRRSV-M-transduced cell lysate. (B) Lane 1, standard protein marker; lane 2, TAT-PRRSV-N-transduced cell lysate; lane 3, PRRSV-N-transduced cell lysate.