1. The yolk sac is gradually vascularized.

2. Without the yolk sac the alevin cannot survive.

3. In early spring, yolk-sac fry, or Alevins, hatch

4. Meckel's diverticulum is the rudiment of the embryonic yolk sac.

5. The results showed that more than80%of nutrition in yolk sac were utilized in59hours, which suggested that it was the main period of yolk sac utilization.

6. By two months, the yolk sac becomes redundant and shrivels away.

7. Distinctive marks formed at yolk-sac absorption, initiation of feeding and settlement.

8. The successfully fertilised eggs and the yolk sac larvae survive well, normally above # %

9. Objective To study the diagnosis and recognition of yolk sac tumor of testis.

10. The Allantois is an extension of the posterior wall of the yolk sac

11. Until about three months in the womb, baby sharks feed off a yolk sac.

12. Young Arrowana should not have a yolk sac - and be seen feeding before purchase.

13. Two other structures that develop at this time are the amnion and the yolk sac .

14. Before the yolk-sac completely disappears, the tiny fish must become capable of feeding themselves.

15. The gonads form from a group of large granulated yolk sac cells which invacle ridges.

16. ALEVINS: From January to the Spring, the eggs hatch and feed from their yolk sac.

17. In conjoined twins, a single Chorionic sac, yolk sac and a single triangularly shaped embryonic pole may be imaged at 6 weeks of gestation

18. The second transition is hatching, and the former embryo becomes an Alevin or yolk-sac fry.

19. Along with the yolk sac absorption, stomach and duodenum, were differentiated 3 days post hatch, respectively.

20. Alevin that leave the gravel before their yolk sac is completely absorbed are commonly called button-up fry.

21. AFP production appears to cease synchronously in the liver and yolk sac during the 8th week of gestation.

22. The yolk sac will produce blood and help to nourish the embryo until the placenta takes over that role .

23. The Allantois forms from the part of the fetal yolk sac that eventually becomes the primitive hindgut (the cloaca).

24. The Allantois forms from the part of the fetal yolk sac that eventually becomes the primitive hindgut (the cloaca)

25. Methods The yolk sac in 129 pregnant women were measured by ultrasonography, and compared in normal and abnormal pregnancy group.

26. The secondary yolk sac( YS ) is the first extraembryonic structure that can be detected with ultrasonography in the chorionic cavity.

27. A modified method of extracting and purifying rickettsiae from infected chicken embryo yolk sac by differential centrifugations and Ether treatment.

28. Neither the length of the yolk sac phase nor the length of the emergence period among alevins was affected by photoperiod.

29. Results Methylmercury could pass through yolk sac placenta quickly, and inhibit placenta development and blood vessel differentiation there at higher concentration.

30. ‘Inside the egg are a series of fluid-filled membranes which permit the embryo to survive: the Amnion, allantois, yolk sac, and chorion.’

31. Alpha fetoprotein (AFP) is a protein produced by the liver in a developing baby (fetus) and the portion of a developing embryo that is similar to the yolk cavity in bird eggs (yolk sac tissues) during pregnancy

32. The typical lesions observed were yolk sac edema, vertebra defect, craniofacial malformations (double head, triple retina), Anaxial body and inhibition of swim bladder inflation

33. Blood is manufactured by the yolk sac for six weeks; then the liver takes over this function, which is finally assumed by the bone marrow.

34. It develops from an outer fold on the surface of the yolk sac. In insects the Chorion is the outer shell of the insect egg.

35. The Allantois grows rapidly and within ten days completely surrounds the embryo and yolk sac and fills the extra-embryonic coelom between the amnion and chorion

36. First, though, a crucial process has to take place —their yolk sac has to begin moving through their umbilical cord and navel into their tiny abdomen.

37. ‘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.’.

38. 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.

39. This yolk-sac allows the Alevin to attain a relatively large size in the first month or so of its life and eliminates the total dependence on feeding.

40. This yolk-sac allows the Alevin to attain a relatively large size in the first month or so of its life and eliminates the total dependence on feeding

41. Chalaza (anchors yolk)

42. And egg yolk too.

43. Aplacental vivipary, embryos feed on uterine milk after using up yolk sac; litter size possibly 4-7; size at maturity 1.1 ft disc width for males, 1.3 ft for females.

44. The egg yolk will inspissate.

45. Proposed SAC Blocks

46. Yolk sack still feeding baby.

47. Only the yolk contains cholesterol.

48. The yolk endoplasm is a cytoplasmic network embodying proteid yolk particles, lipid droplets and accumulations of glycogen.

49. [ Yolk sack still feeding baby. ]

50. How come there is no yolk?

51. It's the mitral sac.

52. Cul-de-sac or cul de sac or Culdesac may also refer to: Places

53. Same old J-Sac.

54. Okay, there's the amniotic sac.

55. b) SAC-A satellite mission

56. Mix egg yolk mixture into egg white mixture.

57. Who breaks the egg will find the yolk.

58. Brush the top with beatened egg yolk.

59. Turns out tempera contains enticing egg yolk.

60. Sac PD are not babysitters.

61. We' re in the pleural sac

62. Combine the egg yolk and egg white batter carefully.

63. January haze, With a veined yolk of sun.

64. Fold the cream into the egg yolk mixture.

65. C., busting open his egg yolk with his fork.

66. Add an egg yolk to bind the mixture together.

67. A Chalaza (plural Chalazae) is a structure inside an egg that helps to keep the yolk in place. It attaches to either end of the yolk and anchors it to the inside of the eggshell, essentially suspending the yolk

68. In third stage, at maturing of the embryo sac, pollen tubes grow directionally toward micropyle into embryo sac.

69. SAC is tool software widely used in seismology research. SAC format also becomes general format of seismic waveform.

70. I'm gonna puncture the sac now.

71. • Bivouac sac or small tarp (emergency shelter)

72. 21 Add an egg yolk to bind the mixture together.

73. There is the yolk, the white and the shell.

74. Canine Apocrine Gland Anal Sac Adenocarcinoma (AGASACA) Apocrine gland anal sac adenocarcinomas (AGASACA) are malignant tumors of the anal glands

75. 2 synonyms for Amnios: amnion, amniotic sac

76. 25 Fold the cream into the egg yolk mixture.

77. Whisk the egg yolk and sugar until creamy white.

78. Add an egg yolk to make the mixture bind.

79. Custard is a cooked mixture of cream and egg yolk

80. 17 Add an egg yolk to make the mixture bind.