TABLE 1.

Growth of mutant viruses on complementing and noncomplementing cells

Virus	Growth of virus (titer) on:
	Noncomplementing cells	Complementing cells
WT HSV-1	1.8 × 1010	1.2 × 1010
K5ΔZ	<104a	1.6 × 109
FRΔUL37	<104a	1.9 × 109
FRΔUL37R	6.2 × 1010	9 × 1010
KΔUL36	<104a	3.1 × 109
ARΔUL36	<104a	2.0 × 109
ARΔUL36R	2.5 × 1010	2.4 × 1010

^aThe input virus caused severe cytopathic effects at lower dilutions.