Figure 1.
A. The hCD68-rtTA-M2 construct. The 4.3 kbp construct includes the 2.9 Kbp genomic DNA immediately upstream of the start site, followed by the 83 bp fist intron (IVIS), the rtTA-M2, and the bovine growth hormone poly A tail.
B. Demonstration of GFP in hematopoietic tissue of double transgenic animals induced with doxycycline (induced) or without doxycycline (control). BM – Bone Marrow, PB-Peripheral Blood, SPLN- Spleen. About 10% of all bone marrow cells were positive for GFP, while only 0.2 % of cells were positive in peripheral blood and 1% in spleen. Negligible numbers of cells were GFP-positive in the control animals. When GFP-positive cells were superimposed (green) onto FSC-SSC contour plots, they distributed to a pattern expected of monocytes-macrophages.