This a model from the article:
Theoretical and experimental evidence for hysteresis in cell proliferation.
Bai S, Goodrich D, Thron CD, Tecarro E, Obeyesekere M. Cell Cycle.
2003 Jan-Feb;2(1):46-52. 12695688
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Normal human spermatogenesis concludes with the formation of large numbers of morphologically well developed spermatozoa. While transcriptionally quiescent these cells carry an RNA payload that reflects the final spermiogenic phase of transcription. We report here the spermatozoal transcript profile...
