Figure 3.

Engraftment of expanded monocytic cells in lung and brain after transplantation. β-Gal staining of cryostat sections of tissues from B6/129F2 animals transplanted with M-CSF- and FL-expanded ROSA 26 macrophage precursors are shown. A and B are sections from lung demonstrating a doublet of β-gal⁺ (blue) cells 3 days after transplantation (A) and a larger cluster of β-gal⁺ cells at 7 days (B). Rare groups of β-gal⁺ cells were seen in the brain of an animal at 14 days (C, arrows).