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Periodogram analyses of the temporal variations of several cellular oscillations occasionally reveal the existence of short duration bands containing a wide range of frequencies. The possibility is considered that these are due to the transient compliance with chaotic conditions.
Cellular oscillations in total extractable protein content and protein tyrosine phosphatase activity were analysed in proliferating and differentiating human acute promyelocytic leukaemic (HL-60) cell extracts. Differentiation was induced along the granulocytic pathway using all-trans retinoic acid (ATRA). High frequency rhythms with distinct, well defined waveforms of varying amplitude were observed...
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