TABLE 1.

Detection of env gene expression by RT-PCR from 4070A in RG2 tumors from brain and systemic organs

	Tumors & Treatment
Organs w/ Tumor	RCR-CD–Infected RG2 & PBS	RCR-CD–Infected RG2 & 5FC	RCR-CD–Pretransduced RG2 & 5FC
brain	+	+	+
lung	−	−	−
liver	−	−	−
spleen	−	−	−
kidney	−	−	−
bone marrow	−	−	−
upper GI (esophagus)	−	−	−
lower GI (intestine)	−	−	−
skin	−	−	−
testes	−	−	−

^*No detectable virus was found outside the central nervous system. The env gene from 4070A was expressed inside the brain tumor only. + = present; − = absent.