Abstract: Disclosed are devices, compositions, and methods for diagnosing eosinophilic esophagitis in a subject. Also disclosed are methods for monitoring the course of eosinophilic esophagitis in a subject before, during, and after treatment.

Abstract: A note aid transposer for guitars and other instruments has a plurality of independent slides in a frame holding them parallel; each slide represents a separate string of an instrument; parallel with the slides but at the top of the frame a numbered fret array indication co-acts with equally spaced one-note measures therebeneath on a scale displaying the notes and below them the corresponding names of the notes; along the left side of the frame a slide retaining strip at a right angle to the fret array and overlying a portion of the slides in a position aligned with the left edge of the zero fret position has a separate open string notation for each slide; a similar strip lies to the right edge of the highest fret position but provides a different open string indication for the respective slides, which can project from either side of the frame for adjustment to the desired open string tuning position and thus indicate resultant note values at all fret locations.