In a longitudinal study published in Scientific Reports, researchers investigate the effect of maternal physical activity on the size and growth of the yolk sac during early pregnancy. To this end, ...

In the mammal, primitive hematopoiesis is first derived from mesodermal cells within a region out of the embryonic sculture known as the yolk sac. Within this region, primitive red cells and ...

Vol. 28, No. 1, Reproductive Disturbances in Baltic Sea Fish: An International Perspective (Feb., 1999), pp. 16-23 (8 pages) The purpose of this study was to describe the histopathological findings ...

Poor prognosticators: calcified yolk sac and expanded amnion sign. Transvaginal sagittal grayscale ultrasound image in a 27-year-old pregnant patient shows an 8-mm embryo (calipers) without cardiac ...

The third type of stem cells that make up the precursors of mouse embryos has been established for the first time Stem cells that give rise to the mouse yolk sac have been isolated and cultured in the ...

May 13, 2009 (Chicago, Illinois) — Successful pregnancy can be predicted with up to 94% accuracy between days 33 and 36 using transvaginal ultrasound to detect 3 markers, according to new findings ...

Rupture of the yolk sac was identified in leghorn chicks from six placements of a commercial hatchery that had high mortality (up to 3%) during the first 3 days. The abdomens of these chicks were ...

What goes in must come out. Although they’re not always fun (or fragrant) to clean up, full diapers are one of the best signs that a baby’s digestive system is doing its job and the efforts to feed ...