RHOBTB2 and infection: However, for ViraStripe antigens are adjusted to resemble whole cell Western blots with B. afzelii strain PKo [3, 8], whereas for ViraChip adjustment of individual antigens was optimised for high sensitivity in early stages of infection and thus, antibodies usually occurring later on in the disease, e.g. against p83, p58, p39 or Osp17/DbpA are detected less frequently and less intense.