I am sorry to have to tell you that it is grown in an embryonic chicken or in the allantoic fluids that surround it in the egg. ❋ Unknown (2008)
The allantoic fluids in which the flu vaccine is grown, contain a white crystalline substance called allantoin. ❋ Unknown (2008)
Exploration of the mechanism provided his first essay into influenza virus genetics, the demonstration that the "O-D change" which made possible growth in the allantoic sac was due to a mutation, a phenomenon that had not been demonstrated with animal viruses at that time. ❋ Unknown (1997)
From about 1940 Burnet's main interest in virology was influenza virus. 9 He showed that influenza virus could be isolated from human cases by inoculation of throat washings into the amniotic sac, and a year later that virus isolated in this way could be quickly adapted to grow in the allantoic sac. ❋ Unknown (1997)
The hypothesis that these anomalous effects could result from the release by neoplastic cells of a soluble, diffusible agent which altered the differentiative and growth properties of its target cells, received full confirmation from experiments transplanting one or the other mouse sarcoma onto the chorio-allantoic membrane of 4 to 6-day chick embryos, in such a position as to prevent direct contact between embryonic and neoplastic tissues (Fig. 2). ❋ Unknown (1986)
To those who know nothing of the stimulating power of the Aristotelian biological works, Albert's description of the embryos of fish and his accurate distinction of their mode of development from that of birds, by the absence of an allantoic membrane in the one and its presence in the other, must surely be startling. ❋ Various (N/A)
Dollo followed up this suggestion, which had in the meantime been strengthened by Hill's discovery of a true allantoic placenta in ❋ Unknown (N/A)
Cenogenetic processes, on the other hand, include such phenomena as the formation of yolk and the embryonic membranes, the temporary allantoic circulation, the navel, the curved and contracted shape of the embryo, and the like. ❋ Unknown (N/A)
The hind-gut is at first prolonged backward into the body-stalk as the tube of the allantois; but, with the growth and flexure of the tail-end of the embryo, the body-stalk, with its contained allantoic tube, is carried forward to the ventral aspect of the body, and consequently a bend is formed at the junction of the hind-gut and allantois. ❋ Unknown (1918)
Diagram showing later stage of allantoic development with commencing constriction of the yolk-sac. ❋ Unknown (1918)
Blood is carried to the allantoic sac by the two allantoic or umbilical arteries, which are continuous with the primitive aortæ, and after circulating through the allantoic capillaries, is returned to the primitive heart by the two umbilical veins. ❋ Unknown (1918)
In this way the allantoic circulation, which is of the utmost importance in connection with the respiration and nutrition of the chick, is established. ❋ Unknown (1918)
The diverticulum is lined by entoderm and covered by mesoderm, and in the latter are carried the allantoic or umbilical vessels. ❋ Unknown (1918)
Included in this tissue are the body-stalk and the vitelline ductthe former containing the allantoic diverticulum and the umbilical vessels, the latter forming the communication between the digestive tube and the yolk-sac. ❋ Unknown (1918)
With the formation of the amnion the embryo is, in most animals, entirely separated from the chorion, and is only again united to it when the allantoic mesoderm spreads over and becomes applied to its inner surface. ❋ Unknown (1918)
The entodermal cloaca is divided into a dorsal and a ventral part by means of a partition, the urorectal septum (Fig. 992), which grows downward from the ridge separating the allantoic from the cloacal opening of the intestine and ultimately fuses with the cloacal membrane and divides it into an anal and a urogenital part. ❋ Unknown (1918)
Observe the allantoic bladder, the spleen, gall bladder, portal vein, and pancreas. ❋ Unknown (1906)
Reference Letters.all. b., allantoic bladder (= urinary bladder). ❋ Unknown (1906)
Thus, the secondary, allantoic circulation gradually takes the place of the original vitelline circulation. ❋ Ernst Heinrich Philipp August Haeckel (1876)
The lowest part of the allantoic pedicle (or the "urachus") remains hollow, and forms the bladder. ❋ Ernst Heinrich Philipp August Haeckel (1876)
