How To Use Yolk sac In A Sentence
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High humidity can cause an unabsorbed yolk sac, resulting in the chicks being smeared with yolk.
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Conclusion: Although the yolk sac tumor out of gonad have characteristics of malignant tumor by CT scanning, it is still lack of specificity, and need further physiological examination.
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the yolk sac is gradually vascularized
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The resulting embryos were incubated in 750 ml Zuger bottles at a constant temperature of 28.2 0.2°C until yolk sac resorption.
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The stem cells for hematopoiesis in mammals are derived from mesoderm in the yolk sac blood islands and a region of the aorta.
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Inside the egg are a series of fluid-filled membranes which permit the embryo to survive: the amnion, allantois, yolk sac, and chorion.
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We also observed other phenotypes commonly associated with RP morphants [17], such as hypoplasia of the yolk sac extension, abnormalities in the ear, and delayed pigmentation of the eyes.
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In mid spring, after the larval fish has absorbed its yolk sac, it emerges as an alevin and proceeds to find suitable habitat for the summer period.
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The yolk sac forms as the splanchnopleure surrounds the yolk.
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I do not believe, however, that this is normal, since in the wild, young with such a large yolk sac probably would not survive without parental protection.
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Inside, the amnion encloses the embryo in a protected, moist environment in which nourishment is supplied by the yolk sac, and metabolic waste is stored by the allantois.
Reptile
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The hypoblast gives rise to extra-embryonic structures such as the stalk of the yolk sac, whereas the embryo proper is formed from the remaining blastoderm cells, known as the epiblast.
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The middle part of the streak gives rise mainly to lateral plate mesoderm, while the posterior part of the streak provides the extra-embryonic mesoderm of the amnion, visceral yolk sac, and allantois.
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Extraembryonic somatic mesoderm that surrounds the amnion and extraembryonic splanchnic mesoderm (4yolk sac)? what statistical test would i use to assess the impact of two factors on one dependent factor? en Español
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In fish, reptiles and birds, the yolk is contained within a yolk sac which is absorbed into the embryo as the yolk is used.
Biology Basic Facts
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The path along which they travel into the embryo is a very definite one, viz., from the yolk sac upward between the splanchnopleure and gut in the hinder portion of the embryo.
XI. Splanchnology. 3. The Urogenital Apparatus
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Unlike salmon, cod fry have no yolk sac on which to survive.
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The presence of remnant yolk sacs was a good indication that these were indeed hatchlings emerging from their nests.
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The yolk sac was completely absorbed, but the site of attachment was still visible.
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Meckel's diverticulum is the rudiment of the embryonic yolk sac
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Inside the egg are a series of fluid-filled membranes which permit the embryo to survive: the amnion, allantois, yolk sac, and chorion.
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In fish, reptiles and birds, the yolk is contained within a yolk sac which is absorbed into the embryo as the yolk is used.
Biology Basic Facts