Experimental Studies on the Professional Allergic Skin Reactions induced by POCI3

The author studied the sensitization of animals with POCI3. Namely guinea pigs and rabbits percutaneously sensitized to POCI3 showed the allergic skin reaction by reinjecting POCI3. And the results were as follows.1) When POCI3 was injected into the skin of normal guinea pigs, the direct skin reaction was kept positive up to 1/500 of POCI3 in 0.1cc olive oil, after 24 hours.2) When POCI3 was injected into the skin of normal rabbits, the direct skin reaction was kept positive up to 1/1, 000 of POCI3 in 0.2cc olive oil, after 24hours.3) When 1/5, 0001/10, 000 of POCI3 in 0.1cc olive oil was reinjected into the skin of intracutaneously sensitized guinea pigs, it showed the allergic skin reaction.4) When 1/5, 0001/10, 000 of POCI3 in 0.2cc olive oil was reinjected into the skin of rabbits actively sensitized by skin inunction, it showed the allergic skin reaction.5) When the same quantity of POCI3 was injected into the skin of normal animals and sensitized animals the skin reaction of sensitized animals was far more strong than that of normal animals.6) From the above results it became clear that POCI3 was a substance possible to sensitize animals.