After infection with -ΔUL36, -ΔUL37, or -ΔUL20, the outer tegument proteins VP22 (Fig 6Bv, 6Cv and 6Dv) and VP13/14 (Fig 7Bii, 7Cii and 7Dii) as well as gD (Fig 6Fv, 6Gv and 6Hv) and the envelope proteins gB (Fig 7Bvi, 7Cvi and 7Dvi) had still been targeted to the axons as for the parental strain (Figs 6A, 6E and 7A), indicating that axonal transport per se had not been impaired. The gene discussed is PROS1; the disease is infection.