- [[Echalier and Ohanessian (1969)|biblio/4976834]] reported a culture of _Drosophila_ cells that spontaneously transformed.
- [[Schneider's (1972)|biblio/4625067]] report of the establishment of the S2 cell line.
+ - Polyamines are needed for the long-term passaging of some cell lines ([[Mitsuhashi 1998|biblio/9769143]]).
- [[Marteijn and coll. (2003)|biblio/12474249]] optimised a culture medium using a genetic algorithm. This methdod
has been used at least once in invertebrates ([[Munroe and coll. (2019)|biblio/30747414]]).
- [[Kawamura and coll. (2021)|biblio/33899125]] reported the use of plasmin to establish coral cell lines.