Figure 8From: Human IL-12 p40 as a reporter gene for high-throughput screening of engineered mouse embryonic stem cellsHistologic sections of teratomas resulting from in vivo differentiation of mouse ES lines expressing IL-12 p40. Tissues from all three primary cell lineages (endo-, meso-, and ectoderm) were formed in individual teratomas. a-c. Sections from a single teratoma derived from an R1 cell line expressing a high level of IL-12 p40 from pPGK-cIITA-IRES-p40. d-e. Sections from a single teratoma derived from a W9.5 cell line expressing a high level of IL-12 p40 from pPGK-rtTA-IRES-p40. a, d. ciliated epithelium of endodermal origin. b, e. muscle of mesodermal origin. c, f. neuroectoderm.Back to article page