[Seasonal changes in the triiodothyronine level of the blood evoked by ultraviolet irradiation in vitro].


Ultraviolet irradiation (lambda = 254 nm) of the whole blood of juvenile bulls in vitro results in a plasmatic T3 increase dependent on the time of exposure. Dynamics of the growth of hormone content because of UV varies with season. No negative correlation between plasmatic T3 and T4 in irradiated and non-irradiated blood samples was stated. Hence… (More)


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