allantoic การใช้

In 5-hydroxyisourate, which decarboxylates to allantoin and allantoic acid.
The compact tissue first appears in the stalk mesoderm, situated superficial to the allantoic vessels.
Three different layers compose the chorioallantoic membrane; these are called the chorionic epithelium, the mesenchyme and the allantoic epithelium.
A second hole is made at the top of the egg, where the influenza virus is injected in the allantoic cavity, past the chorioallantoic membrane.
After the 48 hour incubation period, the top of the egg is cracked and the 10 milliliters of allantoic fluid is removed, from which about 15 micrograms of the flu vaccine can be obtained.