Brain tumors that begin in the brain. Primary brain tumors originate in the brain itself or in tissues close to it, such as in the brain-covering membranes (meninges), cranial nerves, pituitary gland or pineal gland. Primary brain tumors begin when normal cells acquire errors (mutations) in their DNA.
Chicken drumsticks should be cooked at 400 degrees in a preheated oven according to Better Homes and Gardens. They should be cooked for 35 to 40 minutes, and the meat should not be pink when done. A meat thermometer can be used to ensure food safety; it will reach 180 degrees Fahrenheit when the drumsticks are thoroughly cooked.
The basic 'simple' answer is 'about 35-40 minutes at 350 degrees F', but that is just the basic answer. The actual answer is 'depends on the size/thickness of the chicken breast, what you've done to it first, and how hot you set the oven....