应该是指-----稀释试验 比如：The result of cell spiking experiment indicated that the limit of sensitivity were 1 tumor cell per 105 normal lymphoytes. 系列稀释试验提示 CK20 RT PCR的敏感性为每 105个正常淋巴细胞中检测到 1个肿瘤细胞存在。
