Surgeons thought it right to treat breast cancer by an excision of all the breast and muscular tissue of the chest wall.外科医生认为治愈乳腺癌的正确方法是切除整个乳房及胸壁的肌肉组织。A neurotransmitter is a chemical that nerve cells use to communicate with each other and with muscles.神经传递素是神经细胞用来在相互之间及向肌肉组织传递信号的化学物质。