| Molecule name | Fel d 4
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| MW | 22
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| Amino Acid Sequence | Available
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| Image | Available
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| Expression Vector | Escherichia coli
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			     Sequence Homology
			 | Bos d 2 , Can f 1 , Can f 6 , Cav p 2 , Cav p 3 , Equ c 1 , Mus m 1 , Rat n 1 
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| Allergenicity |  
In vivo Functional Test | | Skin Test | ? |  | Conjunctival Provocation Test | ? |  | Nasal Provocation Test | ? |  | Bronchial Provocation Test | ? |  | Oral Challenge | ? |  
  |  
In vitro  Functional Test | | Basophil/Mast Cell Degranulation/Activation Test | Yes |  
  |  
In vitro Non-Functional Test | | IgE | Yes |  | IgE-Immunoblotting | ? |  
  |  
| 
		     Cross Reactivity
			 | Can f 6
  |  
  |