Oh, what a shocking revelation we have here! It turns out that celery, the unassuming crunchy veggie that’s been hiding in plain sight in your salad, might just be a sneaky little troublemaker for some people. Who would’ve thought, right? In a plot twist worthy of a daytime soap opera, a novel allergen named Defensin (Api g 7) has been unmasked in the celery root. Cue the dramatic music!

So, we have this patient, a lady who apparently couldn’t enjoy her spice mixes because of those pesky episodes of dyspnea and cough. And guess what? Before her hospital stay, all the tests were as clueless about her celery sensitization as a toddler in a quantum physics lecture. But then, plot twist! A double-blind placebo-controlled food challenge with cooked celery (because raw would just be too easy) turns out positive. Surprise!

And here’s where it gets spicy: the patient was already sensitized to mugwort defensin Art v 1. The scientists, playing detective, did an inhibition assay to prove cross-sensitization between Art v 1 and the celery villain causing all the drama. And they were right!

In conclusion, let’s all give a round of applause to Api g 7, the important celery allergen that’s been causing severe reactions while hiding behind negative diagnostic tests. Bravo, Api g 7, for your stellar performance in evading detection. You’ve truly outdone yourself!