Figure 4. Cre/loxP recombination patterns in the brains from different Cre/lacZ transgenic lines determined by X-gal blue staining

A,C,E,G: X-gal and cresyl violet

B,D,F,H: X-gal and eosin stain

A,B: R is reporter alone, no Cre recombinase to make blue

from Tsien, J. Z., et al. 1996. Subregion- and cell type-restricted gene knockout in mouse brain. Cell. 87:1317-1326