however , there was no evidence in any mouse of dissemination of tumor cells into the bloodstream or into any organ other than lymph nodes and spleen . s.c. tumors also developed in a proportion of irradiated nude mice after inoculation of cells from two other s.c. tumors and the metastatic spleen and lymph nodes , but all these tumors regressed during the first or second transplant passage .
C0037999
spleen
C0037993
spleen