Your immune system fights infections using two key players: antigens and antibodies. While they sound similar, they perform opposite roles in immune defense. In simple terms: An antigen is the invader (like a virus or bacteria). An antibody is your body's

Blood may look uniform, but under a microscope, it’s a dynamic mixture of cells with specialized roles. Each type of blood cell performs a distinct function vital to your survival, i.e., carrying oxygen, fighting infections, controlling bleeding, etc. In this article,