title: Single-born marmosets without hemopoietic chimerism: naturally occurring and induced.
abstract: Marmosets have a high frequency of fraternal twinning, and placental vascular anastomoses between the twin fetuses invariably lead to hemopoietic chimerism. The occasional finding of chimerism in single-born marmosets suggested that in a twin pregnancy one fetus had undergone resorption after contributing hemopoietic stem cells to its twin. In this study non-chimeric single-born marmosets were produced by fallopian tube ligation or surgical relocation of one ovary in breeding females. Further, in an examination of hemopoietic cells from over 50 single-born young from nonoperated females, chimerism occurred less frequently than what one would expect if resorption of a co-twin had occurred after a functional anastomosis had been established.
mesh_terms: D000367:Age Factors; D000818:Animals; D002143:Callitrichinae / Q000196:embryology*; D002678:Chimera; D004912:Erythrocytes / Q000276:immunology; D005187:Fallopian Tubes / Q000601:surgery; D005260:Female; D006410:Hematopoiesis; D037102:Lectins / Q000494:pharmacology; D008297:Male; D009030:Mosaicism; D010053:Ovary / Q000601:surgery; D037121:Plant Lectins; D011247:Pregnancy; D012730:Sex Chromosomes / Q000032:analysis; D012744:Sex Ratio
chemical_list: D037102:Lectins; D037121:Plant Lectins