The origin of the mice is extremely important because laboratory mice are available as both outbred stocks and inbred strains from various vendors.
He said that perhaps the authors had fished out a few oocytes, despite their efforts to exclude them, along with the germ-line cells, and that these oocytes could have been the origin of the infant mice produced later.
Investigators have therefore injected the tumour cells into the tissue of the organ of origin in the mouse or rat.
For example, in male embryos, the Sertoli cell progenitors in the chicken apparently have a different developmental origin from those of the mouse.
Indeed, we show that embryonic germ cells and induced pluripotent cells are mapped near the origin of the trajectories, whereas mouse embryo fibroblast and fibroblast cell lines are mapped near the far end of the trajectories.
Furthermore, EG cells and iPS cells are mapped near the origin of the trajectories, whereas mouse embryo fibroblast (MEF) and fibroblast cell lines are mapped near the far end of the trajectories.
Future studies may be able to determine more accurately the origin of the early house mouse colonists and, by proxy, provide a remarkable new perspective on early human colonization of Iceland.
We confirmed the human origin of the tumor in the mouse brain two weeks after inoculation using a specific antibody that recognizes human vimentin.
The origin of the germ-free mice is more related to the origin of the animals in Room 2, but as they still were able to form a functional mucus barrier upon colonization with flora from animals in Room 1, genetic influences are less likely.
