Can there be cross-reactivity between food and pollen?

Allergy

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Cross-reactivity is seen between the seed and the pollen from a related species, as in the case of hazelnut – birch pollen or wheat grain – timothy pollen.
 

Examples of cross-reactivity between pollen and food

PollenFood
Ragweed pollencantaloupe, water melon, cucumber, banana
Mugwort pollencelery, spices, carrot, fennel, parsley
Grass pollenwheat, other cereals, tomato, melon, water melon, kiwi
Birch pollenhazelnut, chestnuts, apple, peach, apricot, pear, plum, cherry, potato, carrot, kiwi, spices