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  • incubation
  • The yolk TH content (22.3 ng triiodothyronine and 654.7 ng thyroxine per total yolk on day 4 of incubation) decreased almost linearly along with development. (go.jp)
  • The TH-activating deiodinase ( DIO2 ) and transmembrane transporter of thyroxine ( SLCO1C1 ) genes were expressed in the last week of incubation, which coincided with a marked increase of circulating thyroxine and a reduction in the yolk sac weight. (go.jp)
  • The magnitude of the effects of deviations from recommended incubation conditions (temperature, humidity, turning frequency, ventilation, and egg orientation) is a function of the severity of the deviation, the length of time of the deviation, and the age of the embryo at the time of the deviation. (backyardchickens.com)
  • Pregnancy
  • A gestational sac is the first sonographic sign of pregnancy and appears about 4 1/2 weeks. (healthtap.com)
  • The yolk sac is an early pregnancy structure, even a beginning ultrasonographer should be able to tell the difference. (healthtap.com)
  • It may work out and your just not where you thought or the pregnancy may not be viable low probality but a pregnancy in the tube can create a pseudo-sac but you would likely be in pain. (healthtap.com)
  • adult
  • The ability of the many cell types within the adult blood system to be constantly replenished and renewed from hematopoietic stem cells is an interesting problem in development and differentiation and has led to questions concerning how, when and where these stem cells for the adult hematopoietic system are generated within the embryo. (semanticscholar.org)
  • scan
  • Hi all, I had my 6 week scan today but all they could see was the gestational sac and the yolk sac - I was told to come back in two weeks. (mumsnet.com)
  • I had a scan at 5+6 and they could see sac and yolk but nothing else. (mumsnet.com)
  • My HCGquantification 223IU/L.-6weeks,.spotting once,dull right pelvic pain .transvaginal scan-a fibroid 4.9cm,right adnex cyst10mm ,no baby sac okay? (healthtap.com)
  • calcium
  • What im doing is a using a butter Containers to hold the yoke and white and using Kordon breathing bag to cover it, and putting the egg shell on the white so the the growing embryo can get calcium to grow. (backyardchickens.com)
  • shell
  • So this test is just to see if the bag can allows oxygen in, CO2 out and to see if the embryo can grow in the bag and inside its own shell. (backyardchickens.com)