Results 21 to 30 of about 75,211 (286)

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

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

Electrolyte and Water Balance of the Early Avian Embryo: Effects of Egg Turning [PDF]

open access: yes, 2002
Formation of sub-embryonic fluid (SEF) is a key aspect of the physiology of the early avian embryo.Here we review the process of SEF formation and the factors which influence its composition and the rate of SEF production and depletion in the Japanese ...
Baggott, Glenn K.   +2 more
core   +1 more source

Haemogenic endocardium contributes to transient definitive haematopoiesis. [PDF]

open access: yes, 2013
Haematopoietic cells arise from spatiotemporally restricted domains in the developing embryo. Although studies of non-mammalian animal and in vitro embryonic stem cell models suggest a close relationship among cardiac, endocardial and haematopoietic ...
Arshi, Armin   +14 more
core   +1 more source

Predictive Value of Yolk Sac Diameter in Cases of Miscarriage [PDF]

open access: yesInternational Journal of Medical Arts
Background: In early ultrasonography, pregnancies with a mean yolk sac diameter of equal to or more than 5 mm are also linked to a threefold increased risk of miscarriage in the first trimester.
Faten Ismaail   +2 more
doaj   +1 more source

Correlation of yolk sac volume obtained by three-dimensional ultrasonography with the gestational age at 7-10 weeks utilizing the multiplanar method [PDF]

open access: yes, 2009
OBJECTIVE: To evaluate the correlation between the yolk sac volume measured by three-dimensional ultrasonography with gestational age at 7-10 weeks.
Araujo Júnior, Edward   +5 more
core   +3 more sources

Yolk sac tumors of the ovary [PDF]

open access: yesCancer, 1970
Eighteen instances of ovarian tumor with microscopic pattern similar to that of the testicular tumors which we termed yolk sac or vitelline are presented. In the ovary, though not in the testis, this pattern has often been called “Schiller mesonephroma.” Reasons are given for our preference for the term yolk sac tumor to that of mesonephroma for these ...
R W, Huntington, W K, Bullock
openaire   +2 more sources

Role of vitamin A/retinoic acid in regulation of embryonic and adult hematopoiesis [PDF]

open access: yes, 2017
Vitamin A is an essential micronutrient throughout life. Its physiologically active metabolite retinoic acid (RA), acting through nuclear retinoic acid receptors (RARs), is a potent regulator of patterning during embryonic development, as well as being ...
Adamo   +23 more
core   +4 more sources

Yolk sac tumors of the testis [PDF]

open access: yesCancer, 1970
The discovery of 2 yolk sac carcinomas of the mouse has established a basis in comparative pathology for the occurrence of this type of tumor in other species with yolk sacs. Grafts and tissue cultures of extra-embryonic yolk sac of the mouse have developed a clear understanding of the types of tissues one might expect in yolk sac carcinomas.
G B, Pierce   +2 more
openaire   +2 more sources

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