They are essential in B cell antibody class switching, in the activation and growth of cytotoxic T cells, and in maximizing bactericidal activity of phagocytes such as macrophages. Mature T h cells express the surface protein CD4 and are referred to as CD4+ T cells.Such CD4 + T cells are generally treated as having a pre-defined role as helper T cells within the immune system.hey are essential in B cell antibody class switching, in the activation and growth of cytotoxic T cells, and in maximizing bactericidal activity of phagocytes such as macrophages. Mature T h cells express the surface protein CD4 and are referred to as CD4+ T cells.
To boil artichokes: 1  Fill a large stainless-steel or enameled pot with lightly salted water; bring to boiling. 2  Add artichokes and return water to boiling. 3  Reduce heat; simmer, covered, for about 20 to 30 minutes or until you can easily pull out a leaf from the center of an artichoke.
1 Drizzle olive oil over the Artichoke leaves, and then spoon generous amounts of the stuffing mixture into each leaf. 2  Once stuffed, place Artichokes in a steamer and steam for 30 to 40 minutes until the leaves are tender.3  To finish, drizzle garlic butter over the Artichoke and add Parmesan cheese to taste.irections. 1  In a large bowl, add the breadcrumbs, chopped garlic and Parmesan cheese. 2  Lightly mix these ingredients together. 3  This will be used as the stuffing for the artichokes. 4  Gently open up the leaves of the Artichoke.