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danby t1_iux8h0s wrote

After a quick google the answer is none of these. This is a rare condition where you have an allergy to cat or pork epithelium (typically it would be some protein in the skin or mucus membranes of the animal). And being exposed to the other causes a severe over reaction.

But if your pork allergy isn't to an epithelial protein then you wouldn't be at risk of being exposed to cat epithelia tissue

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4412402/

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