Fig. 2. The timecourse of tumorigenesis from transplanted TM10 mammary preneoplastic outgrowths. The mice were palpated weekly for tumors. (A) Groups 1 and 2; shows the effect of a single dose of DMBA on mammary tumorigenesis in TM10 mouse mammary outgrowth line. (B) Groups 3 and 4; shows the effect of DMBA treatment of stroma on mammary tumorigenesis in TM10 mouse mammary outgrowth line. UNT, untreated; DMBA, DMBA-treated; (C) Groups 5 and 6; shows mammary tumorigenesis of DMBA-treated TM10 mammary outgrowths in untreated and DMBA-treated stroma. DMBA/UNT, DMBA-treated epithelial cells/untreated host; DMBA/DMBA, DMBA-treated epithelial cells/DMBA-treated host. (D) Groups 7 and 8; shows tumorigenesis in the whole mammary gland transplants into untreated hosts. UNT/UNT
UNT; untreated epithelial cells/untreated host and transplanted as whole mammary gland into untreated host; UNT/DMBA
UNT, untreated epithelial cells/DMBA-treated host and transplanted as whole mammary gland into untreated host.