Involvement of immune system in primary tumor growth. 4T1-12B cells (106) were implanted into the mammary fat pad of two normal (○), athymic nude (□) and SCID (△) BALB/c mice and imaged weekly as described in MATERIALS AND METHODS. Average luminescence +/- sd for each time point is plotted.
Tao et al. BMC Cancer 2008 8:228 doi:10.1186/1471-2407-8-228