Results presented in Fig. 1C show that, in line to what had been observed with the eIF2α polypeptide, the presence of P-PKR, already detectable in samples harvested at 8 h.p.i., reaches a maximum intensity level from 16 to 32 h.p.i. As expected, no significant variations were observed in the total content of PKR throughout the duration of the infection. This evidence concerns the gene EIF2A and infection.