This is the 9552nd most frequent Turkish word.
alerjenlere
"To allergens."
The word 'alerjenlere' is used as a dative case plural form of 'alerjen,' indicating something directed 'to allergens' or 'towards allergens'.
Bazı insanlar alerjenlere karşı duyarlıdır.
Some people are sensitive to allergens.
Here, 'alerjenlere' is in the dative case, showing to what the exposure is directed, which is 'to allergens'.
Doktor alerjenlere maruz kalmanın etkilerini açıkladı.
The doctor explained the effects of exposure to allergens.
In this sentence, 'alerjenlere' signifies against what the measures are taken, 'against allergens.'