TABLE 1.

HCV core protein quantification

Construct	Amt of core protein (ng/million cells)
	Intracellulara	Extracellularb
β-Gal	Negativec	Negative
Dj	112	1.9
Dj-C191	125	1.0
Dj-C173	23	1.5
Dj-D111A	72	2.5

^aCell lysates were tested at a dilution of 1:1,000, and overflow samples were then tested after 1:5,000 dilution.

^bCell culture supernatants were tested undiluted, and overflow samples were then tested after 1:10 dilution (all dilutions were made with fresh culture medium).

^cBelow the cutoff value (2.5 pg/ml).