Results 21 to 30 of about 164,502 (281)

Discovery of New Markers for Haemogenic Endothelium and Haematopoietic Progenitors in the Mouse Yolk Sac [PDF]

open access: yesJournal of Developmental Biology
Erythro-myeloid progenitors (EMPs) originate from the haemogenic endothelium in the yolk sac via an endothelial-to-haematopoietic transition (EHT) to generate blood and immune cells that support embryo development.
Guillermo Diez-Pinel   +3 more
doaj   +2 more sources

A rare case of primary mediastinal yolk sac tumor

open access: yesArchives of Medicine and Health Sciences, 2014
Yolk sac tumor (endodermal sinus tumor) is a subtype of germ cell tumor and a highly malignant neoplasm. In addition to presenting in ovaries and testes, the tumor has been detected at several extragonadal sites, including the presacral area, the ...
Vinay Mahishale   +4 more
doaj   +2 more sources

Adult Pure Yolk Sac Tumor of The Testis [PDF]

open access: yesOnline Journal of Health & Allied Sciences, 2012
Adult pure yolk sac tumor (YST) is extremely rare. In childhood pure yolk sac tumors are most frequently seen, whereas component of mixed germ cell testicular tumors observed in adults.
Sunil V Jagtap   +2 more
doaj   +1 more source

SHORT-CHAIN CARBOXYLIC-ACIDS, A NEW CLASS OF TERATOGENS - STUDIES OF POTENTIAL BIOCHEMICAL-MECHANISMS [PDF]

open access: yes, 1986
Certain short-chain carboxylic acids (SCCA) appear to share a common teratogenic potential, although the structural requirements for activity remain obscure.
Coakley, ME   +5 more
core   +4 more sources

FECT OF EXPERIMENT AL YOLK SAC INFECTION WITH STAPHYLOCOCCUS

open access: yesPakistan Veterinary Journal, 2003
The present project was carried out to study the effect of experimental yolk sac infection with Staphylocvccus aureus on immune status of broiler chicks. For this purpose, one hundred day-old chicks were divided into two groups A and B.
M. F. Rai, S. A. Khan, A. Aslam. K. Saeed, 1K. A. Khan and M. S. Shah
doaj   +1 more source

An ultrasonographic study to evaluate the correlation of calcified yolk sac with spontaneous abortion

open access: yesAsian Journal of Medical Sciences, 2022
Background: The yolk sac is a small, membranous structure, which is situated outside the embryo and has a variety of functions during embryonic development.
Geetanjali Srivastava   +5 more
doaj   +1 more source

Optimizing transportation of fertilized eggs and yolk sac larvae of Silver Pompano (Trachinotus blochii) [PDF]

open access: yes, 2023
Fish seed transport is one of the significant activities in fish farming. The study optimised the packing density of eggs and yolk-sac larvae of Trachinotus blochii in closed plastic bags without using any tranquillizers. The post-shipment survival after
Gomathi, P   +10 more
core   +1 more source

Visceral endoderm expression of Yin-Yang1 (YY1) is required for VEGFA maintenance and yolk sac development. [PDF]

open access: yesPLoS ONE, 2013
Mouse embryos lacking the polycomb group gene member Yin-Yang1 (YY1) die during the peri-implantation stage. To assess the post-gastrulation role of YY1, a conditional knock-out (cKO) strategy was used to delete YY1 from the visceral endoderm of the yolk
Siyeon Rhee   +5 more
doaj   +1 more source

Change of zinc mobilization and gene expression of key zinc transport proteins between the yolk sac membrane and liver of duck embryonic developing

open access: yesPoultry Science, 2022
: Zinc (Zn) deposition in egg yolk is essential for the rapid growth and complete development of the avian embryo. Thus, it is crucial to obtain maximal Zn mobilization at an appropriate time during development in favor of the survival of avian embryos ...
S.P. Bai   +10 more
doaj   +1 more source

Maternal physical activity affects yolk sac size and growth in early pregnancy, but girls and boys use different strategies

open access: yesScientific Reports, 2023
This longitudinal study investigated the impact of actigraphy-measured maternal physical activity on yolk sac size during early development. The yolk sac, a transient extraembryonic organ, plays a crucial role in embryonic development and is involved in ...
Alexander Vietheer   +7 more
doaj   +1 more source

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