Table 1.

RT-PCR detection of viruses in whole oysters and hemocytes after waterborne exposure to single virus stocks at various PFU^a

Test day	RT-PCR detection in three independent trials
	HAV		MNV		PV
	Oyster	Hemocyte	Oyster	Hemocyte	Oyster	Hemocyte
1	+/+/+	+/+/+	+/+/+	+/+/+	+/+/+	+/+/+
2					−/−/−	−/−/+
3	−/−/−	+/+/+
5	+/+/−	+/+/−			+/−/+	+/−/+
8			+/−/+	+/+/+
9	+/+/−	+/+/+			+/+/−	+/+/−
11			−/−/−	−/−/−
13	+/+/+	−/−/+
15					+/+/−	+/+/−
16	−/−/−	+/+/−
20	−/−/+	+/+/+			−/−/−	−/−/−
22	+/+/−	+/−/−
24	−/−/−	−/+/+
27	−/−/−	−/−/−
29	−/+/+	−/+/+

^aOysters were exposed to 6 × 10⁵ PFU of MNV, 1.1 × 10⁷ PFU of PV, or 4.3 × 10⁷ PFU of HAV.