1. The livetin patterns of the two species Crocodylus porosus and Gallus domesticus were very different and it was difficult to find a correspondence. 2. In C. porosus the granules were a larger proportion of the total yolk but they contained very little lowdensity lipoprotein when compared with granules from hens' eggs. 3. The low-density lipoprotein was a lower proportion of the yolk of C. po...

Chicken egg yolk immunoglobulin (IgY) is a superior alternative to mammalian immunoglobulin. However, the practical application of IgY in research, diagnostics, and functional food is limited due to complex or time-consuming purification procedures. The objective of this study was to develop a simple, safe, large-scale separation method for IgY from egg yolk. Egg yolk was diluted with 6-fold de...

Four hundred and eighty mixed-sex broiler chicks aged 3 hrs after hatching were allotted according to a completely random design in a 6 × 2 × 2 factorial schedule into 2 groups of 12 replications of 20 chicks each. The main experimental factors were fasting for 0, 6, 12, 24, 36, and 48 hrs after chick placement, calcium gluconate (Ca-glu) injection (0 and 0.6 mL) and sex (male and female). Inde...

Hepatoid variant of yolk sac tumor of ovary is an unusual tumor with an aggressive behavior. It is usually observed in young females, presents with abdominal complaints and is associated with raised α-fetoprotein (AFP) levels. It should be differentiated from other hepatoid tumors involving the ovary. A complete patient evaluation with gross, microscopy, and immunohistochemistry can identify th...

Thin sections of the oocyte periphery and surrounding granulosa layer from 1--5 day preovulatory follicles were examined by transmission electron microscopy. With the use of certain procedures in tissue preparation, notably the tannic acid method, numerous particles in the range of 15--40 nm with a mean diameter of 27 nm were observed in both extra- and intracellularly. The particles were abund...

BACKGROUND To describe 19 years of clinical experience managing pediatric patients with testicular yolk sac tumors at the Chongqing Medical University Affiliated Children's Hospital. METHODS This study involved a retrospective review of the records of 61 pediatric patients who presented with testicular yolk sac tumor at our institution between 1995 and 2014. RESULTS All patients presented w...

1. Despite considerable recent interest in plasma and yolk testosterone (T) in female birds, relatively little is known about environmental regulation of female T, individual variation in female T or the relationship between plasma and yolk T. 2. In breeding females of a wild population of dark-eyed junco ( Junco hyemalis ), we assessed variation in the responsiveness of the hypothalamo-pituita...