From: Insulin-like growth factor (IGF)-I obliterates the pregnancy-associated protection against mammary carcinogenesis in rats: evidence that IGF-I enhances cancer progression through estrogen receptor-α activation via the mitogen-activated protein kinase pathway
Groups
Cancer incidence (%)
Cancer load number/rat (mean ± SEM)
Latency range (days)
P-UN (n = 6)
16*
0.167
121
P-IGF-I (n = 6)
83
2.17 ± 0.75
57–176
AMV (n = 6)
100
2.20 ± 0.45
92–217