Ukungezwani komzimba nekati kubangelwa i-glycoprotein engokwemvelo ekhona ezingxenyeni ezisabekayo zekati, i- Fel d1. Ngokuphikisana nenkolelo evamile, izinwele zekati uqobo azilona i-allergenic.

Itholakala ku- dander, kepha naku amathe, umchamo futhi kukonke, sekukonke izimfihlo lekati (izinyembezi, amafinyila, njll.). Lokhu amaprotheni ihlala lapho ikati liya khona futhi lisakazeke ikakhulukazi lapho liwashwa. Emizuzwini embalwa kuya emahoreni ambalwa ngemuva kokuthintana nesilwane, noma endaweni lapho isilwane sasikhona, iguliswa liza izimpawu zokuqala.