Table 2.

Specific activity of HHV-8 viral preparations^a

HHV-8 sample	TCID50/ml	No. of DNA copies/ml	Specific infectivity
A	6.11 × 102	4.80 × 108	1.27 × 10−6
B	6.11 × 105	1.74 × 109	3.51 × 10−5

^aSpecific activity of HHV-8 viral preparations. The TCID₅₀ values of two separate HHV-8 viral preparations were determined as described in the text. Total virus DNA copies were determined by quantitative PCR. Specific infectivity was calculated by dividing TCID₅₀ values by total DNA copies.