Table 1.

The limit of detection test results of three repetitive tests for each sample.

Concentration	Results
(TCID50/mL)	Sample A	Sample B	Sample C
2.1 × 102	+	+	+
1.1 × 102	+	+	+
5.3 × 101	+	+	+
2.6 × 101	–	–	–

TCID₅₀, median tissue culture infectious dose.