Results 31 to 40 of about 164,502 (281)

Primary Nasopharngeal Yolk Sac Tumor: A Case Report [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2016
Yolk sac tumour also known as primitive endodermal tumour is the most common malignant germ cell tumour (GCT) in the paediatric age group. Most common sites of involvement are ovaries and testes, but rarely can occur in the extragonadal sites.
Dhanalakshmi Arumugam   +4 more
doaj   +1 more source

Urachal yolk sac tumor penetrating the bladder as a diagnostic challenge: a case report and review of the literature

open access: yesDiagnostic Pathology, 2022
Background Yolk sac tumor (YST) is a germ cell tumor. It is primarily located in the gonads but can also occur extragonadally (extragonadal yolk sac tumor - EGYST), most commonly in the pelvis, retroperitoneum or mediastinum.
Vladimír Šámal   +4 more
doaj   +1 more source

Pure primary yolk sac tumor of the endometrium tends to occur at a younger age: A case report and literature analysis

open access: yesSAGE Open Medical Case Reports, 2021
We present a case of primary yolk sac tumor of the endometrium. This rare tumor occurred in a 43-year-old woman with a pure primary yolk sac tumor. The tumor resembled yolk sac tumor morphology of the ovary.
Huijuan Ge, Rui Bi
doaj   +1 more source

THE ROLE OF SALMONELLA SPECIES AS A CAUSE OF OMPHALITIS IN BABY CHICKS IN ASSIUT GOVERNORATE [PDF]

open access: yesAssiut Veterinary Medical Journal, 2014
A total of 130 diseased and dead broiler chicks of 1-10 days of age obtained from different sources were examined; yolk sac samples from these chicks were cultured and the bacteria were isolated and identified on biochemical tests.
NAGLAA M. ALI   +2 more
doaj   +1 more source

Origins and functions of phagocytes in the embryo [PDF]

open access: yes, 2000
Objective. To review the data on the origins, phenotype, and function of embryonic phagocytes that has accumulated over past decade. Data Sources. Most of the relevant articles were selected based on the PubMed database entries.
Lichanska, A M   +5 more
core   +1 more source

KIT Is Required for Fetal Liver Hematopoiesis

open access: yesFrontiers in Cell and Developmental Biology, 2021
In the mouse embryo, endothelial cell (EC) progenitors almost concomitantly give rise to the first blood vessels in the yolk sac and the large vessels of the embryo proper.
Alessandro Fantin   +6 more
doaj   +1 more source

Cushing’s syndrome caused by ACTH precursors secreted from a pancreatic yolk sac tumor in an adult—a case report and literature review

open access: yesFrontiers in Medicine, 2023
Here, we report the first adult case of pancreatic yolk sac tumor with ectopic adrenocorticotropic hormone (ACTH) syndrome. The patient was a 27-year-old woman presenting with abdominal distension, Cushingoid features, and hyperpigmentation.
Johnny Yau Cheung Chang   +12 more
doaj   +1 more source

Yolk sac count matters [PDF]

open access: yes, 2019
Yolk sac is the first anatomical structure identified within the gestational sac at 5+ weeks and is diagnostic of intrauterine pregnancy. It is attached through the yolk stalk with the intestinal cavity of the embryo and is supplied with blood vessels ...
Todani, Kiralata, Todani, Ashok K.
core   +1 more source

Which parameters – rates of survival or growth – determine the best moment for stocking trout larvae?

open access: yesArchives of Polish Fisheries, 2015
The aim of this study was to determine the best moment to stock trout, Salmo trutta L., larvae into the wild. This goal was accomplished by determining weekly changes in the growth parameters of larvae that were fed in seven variants: on the day of 2/3 ...
Domagała Józef   +2 more
doaj   +1 more source

The biosynthesis of cholesterol in the developing chick embryo*

open access: yesJournal of Lipid Research, 1962
Mevalonic acid-2-C14 was injected into the yolk of incubating fertile hens' eggs on the sixth day of incubation. A nonsaponifiable fraction (NSF) containing labeled components was isolated from the yolk sac and from the embryo throughout the remainder of
Pat W. Camerino, Lemuel D. Wright
doaj   +1 more source

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