Inhibition of natural killer activity in porcine mononuclear cells by African swine fever virus
1991
Mendoza, C. | Videgain, S. P. | Alonso, Fernando
The coincubation at 37°C for 24 hours of swine peripheral blood mononuclear cells with African swine fever virus inhibited in part the natural killer activity shown by cells incubated without the virus. This inhibition depended on the dose of the virus and on the time that cells were incubated with it. When the virus preparation was fractionated by ultra-centrifugation, most of the inhibitory activity was found in the sedimented fraction, where viral particles were present; however, the loss of inhibitory activity in respect to the whole virus preparation indicated that some inhibitory activity was present in the supernatant fraction, probably as factors released by infected cells. Most of the inhibitory activity shown by the sedimented fraction was lost when the virus was inactivated by ultraviolet radiation, indicating an active role of virus infectivity in the inhibition. © 1991.
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