Here is another reply I just received: >>It looks suspiciously like a virus, but could also be a nutritional problem, particularly micronutrients. If it is a virus, it is probably whitefly transmitted. If this is the case, there is nothing that can be done for the plants now. In the future, you would have to keep the plants free of whiteflies. Why not assume that it is nutritional, however-- this is something you can do something about now. Apply a foliar nutritional spray that includes iron, manganese, and zinc. Because these plants are indeterminate based on the photos, they are more prone to nutritional stress. Commercial growers are having a lot of trouble with a virus right now, called tomato yellow leaf curl. Good luck .>> Ken Pernezny