27 MAST CELLS IN THE URINARY BLADDERS OF INTERSTITIAL CYSTITIS/BLADDER PAIN SYNDROME PATIENTS EXPRESS THE MAST CELL RELATED G-PROTEIN COUPLED RECEPTOR X2 (MRGPRX2): POTENTIAL ROLE IN THE PATHOGENESIS OF NEUROGENIC INFLAMMATION. - O Abdelwahab; H Markham; M Yusuh; D Johnston; S Harris; P Sirikhansaeng; K Garba; B Birch; B Lwaleed (Continence, 2022)