Figure 1. In vivo tumor-promoting potential of βhCG. SP2/O cells were implanted in BALB/c x FVB/J^βhCG/- F1 transgenic and non-transgenic male (A) and female (B) mice.

Left panels depict tumor volumes in individual animals and right panels mean ± standard error, at different times post-cell implantation. *p≤0.05; **p≤0.01 versus non-transgenic littermates. n = 6.