Table 1.

Recognised cat allergens and their properties^{2,6,7,9,11,27}

Allergen	Protein family	Major source	Molecular mass
Fel d 1	Secretoglobin	Dander, saliva	38 kDa
Fel d 2	Serum albumin	Dander, serum, urine	69 kDa
Fel d 3	Cystatin A	Dander	11 kDa
Fel d 4	Lipocalin	Saliva	22 kDa
Fel d 5	IgA	Saliva, serum	400 kDa
Fel d 6	IgM	Saliva, serum	800-1000 kDa
Fel d 7	Lipocalin	Saliva	17.5 kDa
Fel d 8	Latherin-like	Saliva	24 kDa