When our bodies are under attack from foreign organisms,such as bacteria and viruses,our immune system orchestrates a complex fight-back involving many separate parts.One important component of this response is a type of cell called the B-lymphocyte–it is this cell that is at the forefront of our When our bodies are under attack from foreign organisms, such as bacteria and viruses, our immune system orchestrates a complex fight-back involving many separate parts. One important component of this response is a type of cell called the B-lymphocyte-it is this cell that is at the forefront of our