Q: In this task, you are given a abstract of article and corresponding title of an article. Your task is to generate label "yes" if title is right for article, otherwise generate "no".
Abstract: DEFINITIVE erythropoiesis in birds originates from stem cells that emerge in the splanchnopleural mesoderm near the embryonic aorta14. The yolk sac is still generally held to be the unique provider of haematopoietic stem cells during mammalian ontogeny5, although there may be an alternative intraembryonic source of stem cells in the mouse fetus6,7. Here we search for a possible non-yolk-sac source of stem cells by grafting intraembryonic splanchnopleura from 10- to 18-somite mouse embryos into adult immunodeficient SCID mice. We find significant amounts of donor-derived serum IgM, normal numbers of IgM-secreting plasma cells, and the Bla (IgMa brightB220dullCD5+) cell subset to be fully reconstituted by donor progenitors 3 to 6 months after engraftment. The haematogenic capacity revealed in our experiments is present in a previously unrecognized site, the earliest described in the embryo, 12 hours before fetal liver colonization.. Title: Markets, voucher subsidies and free nets combine to achieve high bed net coverage in rural Tanzania
A:
no