[Decrease of the immunodefence by halothane (author's transl)]

From thirty-two operated patients, narcotized with halothane, the PHA-stimulated rates of blastic transformation of cultivated lymphocytes were determined before and after the surgical operation. There was demonstrated a decrease of ability of the stimulation during 6--7 days. The maximum of this reaction was reached after 48 hours. We suppose that doses of halothane are inducing a decrease of immunodefence.