title: Biorhythms, system organization and bioactive compounds. II. Hysteresis at different levels of system organization.
abstract: It was pointed out that hysteresis and, therefore, periodicities can be observed at different levels of system organization (chemistry and physics, biochemistry, physiology, morphology).
mesh_terms: D000818:Animals; D001001:Anura; D004330:Drosophila; D008954:Models, Biological; D010507:Periodicity; D013598:Systems Theory