The activity of digestive enzymes (amylase, lipase, protease) in the pancreas and thymus when introduced into the diet of vegetable fats (soybean oil, sunflower oil, rapeseed oil)
In the pancreas zero. Digestive enzymes are produced there as zymogens (inactive precursors), and get activated by proteolysis only in the small intestine.
What does the thymus (an organ of the immune system) have to do with this?