The cat protein, on the one hand, causes an allergic reaction, making the body produce an antibody called immunoglobulin E.
一方面猫的蛋白质导致过敏反应,让人体生出一种叫免疫球蛋白E的抗体。
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But getting back to something else in your e-mail-i think what your cat Casper did when he was hiding behind that flap of bedspread falls under what I call Feline Physics.