noun
endosymbiosis
Biology term referring to a symbiotic relationship where one organism lives inside the cells of another, such as mitochondria or chloroplasts in eukaryotic cells.
ミトコンドリアは細胞内共生の結果として生じたと考えられている。
Mitochondria are thought to have arisen as a result of endosymbiosis.
Symbiosis in general; 細胞内共生 specifies that the symbiosis occurs inside the host's cells.
Compound of 細胞内 (intracellular) + 共生 (symbiosis). The term is a direct translation of the English 'endosymbiosis'.