Membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional.
1In mice, Ins2 is imprinted and paternally expressed in the yolk sac.
2All six ovarian yolk sac tumors showed diffuse immunoreactivity for glypican-3.
3Chemotherapy of yolk sac tumor heterotransplanted to nude mice was studied.
4Ovarian yolk sac tumors are common germ cell tumors usually arising in young women.
5The patient underwent a surgical biopsy, which defined the diagnosis of yolk sac tumor.
6Gastric adenocarcinoma with yolk sac tumor (YST) differentiation has rarely been reported.
7Tissue-resident macrophages can develop from circulating adult monocytes or from primitive yolk sac-derived macrophages.
8Our results support the contribution of the yolk sac as a source of microglial precursors.
9Percutaneous biopsy of the tumor suggested yolk sac tumor.
10Furthermore, Wnt-reporter activity was also detected in the blood islands of the mouse yolk sac.
11Analysis of knockout embryos revealed severe defects in the reorganization of the yolk sac vascular plexus.
12Gastric carcinoma with yolk sac tumor component is a rare entity with a poor prognostic outcome.
13This study thus identifies a molecule crucial for vascular patterning in embryonic yolk sac and brain.
14The YST-1 tumor cells preserve the histological appearance of a human yolk sac tumor and produce x-fetoprotein.
15Tech There's the yolk sac, and you can just barely see the heartbeat there, if you look.
16Two other imprinted genes from the same cluster are also expressed monoallelically in the human yolk sac.