BST2 and infection: In order to investigate whether the infection of SC09r×HBG HA/NA and SC09 caused different subcellular localization of tetherins, and whether SC09r×HBG HA/NA could subsequently release effectively from tetherin-expressing cells, we studied the localization of eqTHN and huTHN in cells infected with either SC09r×HBG HA/NA or SC09.