Abstract
The anti-tumour activity of Lactobacillus casei YIT 9018 (LC 9018) on Lewis lung carcinoma (3LL) in C57BL/6 mice and line-10 hepatoma in strain-2 guinea pigs was examined. Intravenous injection of LC 9018 was effective for inhibition of pulmonary metastases in C57BL/6 mice after s.c. inoculation with 3LL tumours. Intralesional (i.l.) injection of LC 9018 was also effective for both prolongation of the survival period and inhibition of pulmonary metastases in 3LL tumour-bearing mice. The combination treatment of i.l. and i.v. injections of LC 9018 before or after surgical excision of the primary tumour remarkably inhibited the pulmonary metastases after inoculation with 3LL tumour. Intralesional injection of LC 9018 was effective for regression of the established tumours of line-10 hepatoma inoculated i.d. and for induction of systemic tumour immunity in strain-2 guinea pigs.
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