Expression of T-cell markers on GFP cells. (A) The proportion of CD3⁺ lymphocytes as a function of days postinjection. (B) GFP⁺ lymphocytes express T-cell markers CD3 (left), CD4 (middle), and CD8 (right). This representative panel of subset marking was taken from dog X349 at 41 weeks posttreatment. (C) The majority of CD3⁺ cells stain positive for CD45RA, as indicated in this representative panel of dog X349 at 35 weeks after treatment.