CD4 cells are a type of lymphocyte (white blood cell). They are an important part of the immune system. CD4 cells are sometimes called T-cells. There are two main types of T-cells.T-4 cells, also called CD4, are âhelperâ cells. They lead the attack against infections.D4 cells are a type of lymphocyte (white blood cell). They are an important part of the immune system. CD4 cells are sometimes called T-cells. There are two main types of T-cells.
How long to grill bratwurst depends on how you grill them. You can throw them straight on the grill which will take about 25-30 minutes or boil the brats in beer, wine or water for about 20 minutes. After boiling, then they are grilled for 4-6 minutes.
1 Pour some beer over the brats (about 6 ounces) and let this simmer with the grill lid down for about 15 minutes. Check the internal temperature of the brats with a meat thermometer. They should be about 160 Â°F (71 Â°C).  Remove the brats and place them directly on the grill for about 5-7 minutes.