Table 2.

A Hypothetical Data Table for an Endpoint Dilution Assay

Virus dilution	Cytopathic effect
10−2	+	+	+	+	+	+	+	+	+	+
10−3	+	+	+	+	+	+	+	+	+	+
10−4	+	+	−	+	+	−	+	+	+	−
10−5	−	+	−	−	+	+	−	−	+	−
10−6	−	−	−	−	−	−	+	−	−	−
10−7	−	−	−	−	−	−	−	−	−	−

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