Journal: Digestive Diseases and Sciences
Article Title: Involvement of EP2 and EP4 Receptors in Eosinophilic Esophagitis: A Pilot Study
doi: 10.1007/s10620-019-05623-5
Figure Lengend Snippet: Immunohistochemistry shows strong DP1 staining in eosinophils ( a , arrows ), while epithelial cells in esophageal mucosal biopsies are practically devoid of staining. EP4 ( b ) and EP2 ( c ) immunostaining is prominent in eosinophils ( arrows ) but also visible in epithelial cells ( arrowheads ). 3-3′-Diaminobenzidine (DAB) was used as visualization substrate for DP1 and EP4 staining (brown precipitates), while for EP2, ImmPact™ NovaRED substrate was used (red precipitate). Calibration bar: 50 µm
Article Snippet: For flow cytometric visualization of the EP receptors, cells were incubated with rabbit polyclonal antibodies against EP1, EP2, and EP3 (20 μg/ml; Alomone Labs, Jerusalem, Israel) and mouse polyclonal antibody against EP4 (20 μg/ml; Alomone Labs, Jerusalem, Israel), or normal rabbit or mouse IgG (20 μg/ml; Santa Cruz Biotechnology, Dallas, TX, USA) for 30 min at 4 °C.
Techniques: Immunohistochemistry, Staining, Immunostaining