Human chimerism in the tissue of immune-deficient mice that received intravenous transplants of human fetal tissues.

Comparison of human hematopoietic chimerism from hematopoietic and nonhematopoietic sources. Scatterplots show FACS analysis of mouse BM stained with the pan-leukocyte marker CD45 for the detection of human hematopoietic cells (gated box) after transplantation with isotype control (A), fetal blood (B), fetal liver (C), fetal BM (D), fetal muscle (E), and fetal neural cells (F). Cell doses ranged between 2 × 10⁶ and 5 × 10⁶ to up to 15 × 10⁶ for muscle and neural transplants (n = 43).