Monocyte disorders include both an abnormal increase in monocytes and a deficiency in monocytes.单核细胞失调包括单核细胞数异常升高和单核细胞不足。Mononucleosis is a disease caused by the Epstein-Barr virus.单核细胞增多是一种由爱–巴病毒引起的疾病。A monocyte is a white blood cell that can provide immunological defences against many infectious organisms.单核细胞是一种白细胞，可提供针对许多感染性生物的免疫抵抗能力。