I had a chicken that had signs of Marek's disease. Over the span of 2 weeks she went from good appetite and one paralyzed leg to both legs acting paralyzed and barely able to function. By the end of 2 weeks she flopped around helplessly. She tried to eat, but could barely manage a couple of pecks at her food. We culled her today and I did a quick field necropsy with a dull knife. I have a couple questions about what I saw and attached some photos here. There was a bright green fluid - is that normal? There was a large structure, donut shaped, in her belly. I cut it, and it was a uniform tissue. What was that? Do her follicles look ok? I probably didn't find any diagnostic features of Marek's, but I'd sure like another opinion.