This a model from the article:
Ion currents underlying sinoatrial node pacemaker activity: a new single cell
mathematical model.
Dokos S, Celler B, Lovell N. J Theor Biol
1996 Aug 7;181(3):245-72 8869126
,
Abstract:
...
Foxl2 is a forkhead transcription factor essential for proper reproductive function in females. It is expressed in the somatic cell population of the gonad (granulosa cells) which forms the follicles of the ovary, the structures responsible for embedding and nurturing the oocytes during their develo...