The system is a so-called sandwich assay: target pathogens stick to antibodies on the chip and are detected when they are sandwiched between another layer of antibodies labeled with fluorescent dyes.

• 这套系统用的是所谓的三明治检验法：当目标病原体黏上晶片上的抗体，而另一层系有萤光染色剂的抗体又黏上病原体后，就可以侦测得到了。