yolk sac

collocation in English

meanings of yolkand sac

These words are often used together. Click on the links below to explore the meanings.
yolk
noun[ C or U ]
uk /jəʊk/ us /joʊk/
the yellow, middle part of ...
See more at yolk
sac
noun[ C ]
uk /sæk/ us /sæk/
biology specialized
a part of a plant or animal that is like a bag and often contains liquid, or a similar artificially ...
See more at sac

Examples of yolk sac

yolk sac
But metformin was not without adverse effect since it was associated with a delay in neural tube closure and reduced yolksac protein values at two different concentrations.
If each chorionic or gestational sac has a single yolksac and an embryo with cardiac activity then the amnionicity equals the chorionicity (dichorionic-diamniotic or trichorionic-triamniotic).
Levi et al17 recently published on the characteristics of the yolksac in monochorionicmonoamniotic twin pregnancies.
An exponential rise of yolksac volume was noticed between gestational weeks 5 and 8, followed by a more gradual volume increase between weeks 8 and 10.
Allele specific inactivation of insulin 1 and 2, in the mouse yolksac, indicates imprinting.
The visceral yolksac, allantois and amnion were dissected away from the fetal material and excess fluid was wiped clear prior to measuring the weight.
The exocoelomic cavity contains the yolksac, which is connected to the primitive digestive tract and fetal circulation.
The trend was in the order yolksac endoderm epiblast derivatives > placenta.
Interestingly, he did not find any differences in vascularity of the yolksac between normal and complicated pregnancies.
Freshly hatched tadpoles had a prominent yolksac, the contents of which were rapidly used up during the first few days of development.
Production of 13 plasma proteins by human testicular yolksac tumor transplanted into nude mice.
If the cell division of the twins was late, just before conjoined twins would occur, a single yolksac would be apparent on the sonogram.
In uncomplicated pregnancies, a positive correlation between gestational age and yolksac volumes was found up to 10 weeks gestation.
In the two monochorionic-monoamniotic twins a single yolksac and amniotic cavity was seen at 9 weeks.
Two days after hatching, the yolksac had been consumed and the larvae started feeding on exogenous food.
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.

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