SpringerLink - Human Physiology, Volume 26, Number 4 - 0 views
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salivary cortisol were studied by Russian cosmonauts on board orbital station Mir during long-term space flights (SF)
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After the long-term SF, individual ratios of salivary and plasma cortisol levels increased against the background of increased plasma content of the hormone, i.e., the fraction of free, physiologically active hormone in the total pool of circulating molecules decreased.