The second reaction can happen within 72 hours of the first. Protracted anaphylaxis: This type of anaphylaxis is relatively rare. The reaction can last for days or even weeks without fully resolving.

A biphasic anaphylactic reaction involves a recurrence of symptoms after the initial symptoms of anaphylaxis have been treated and subsided. A second reaction can occur up to 72 hours after the first.

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Previous studies of prebreakdown phenomena in very pure liquid cyclohexane have shown that, in a point-plane electrode assembly and for negative polarity of the point, a regular current pulse regime ...