Many nebulae or stars form from the gravitational collapse of gas in the interstellar medium or ISM. As the material collapses under its own weight, massive stars may form in the center, and their ultraviolet radiation ionizes the surrounding gas, making it visible at optical wavelengths.he size of these nebulae, known as HII regions, varies depending on the size of the original cloud of gas. New stars are formed in the nebulae. The formed stars are sometimes known as a young, loose cluster. Some nebulae are formed as the result of supernova explosions, the death throes of massive, short-lived stars.
In addition, one vaccine for the prevention of H5N1 influenza, commonly referred to as avian influenza or âbird flu,â contains the adjuvant AS03, an oil-in-water emulsion.
Drug Influenza Virus Vaccine. Price list. The generic Influenza Virus Vaccine combination is manufactured by 6 companies. The information provided includes the cost of the drug and the type of drug - tablet, capsule, syrup, cream, gel, ointment, liquid or injection. To view the price of the drug click on the brand name. Please also note that Medindia's database currently has 6 Brands of Generics of Influenza Virus Vaccine listed.