Most identifiersin the Java(TM) programming environment have either class or local scope. Instance and classvariables and methods have class scope; they can be used outside the class and its subclasses onlyby prefixing them with an instance of the class or (for class variables and methods) with the classname.
Acyclovir was the first successful antiviral agent in the world. It was originally synthesized in 1974 by Howard Schaeffer at Wellcome Research Laboratories (now GlaxoSmithKline).
These vaccines included 23 purified capsular polysaccharide antigens of Streptococcus pneumoniae and replaced the 14-valent polysaccharide vaccine licensed in 1977. 1981: The first hepatitis B viral vaccines, developed by Merck and also by the Pasteur Institute, were licensed.