<unk>  is the process by which either prokaryotic or eukaryotic<unk> s are grown under controlled conditions.  In practice the term<unk> " has come to refer to the<unk> ng of<unk> s derived from multicellular eukaryotes, especially animal<unk> s.  The historical development and methods of<unk>  are closely interrelated to those of tissue<unk>  and organ<unk> .
Animal<unk>  became a routine laboratory technique in the 1950s, but the concept of maintaining live<unk>  lines separated from their original tissue source was discovered in the 19th century.
Cell culture
Virus classification
Microbiology template
Molecular microbiology
Microbiology
Virology
Diagnostic test
DNA extraction