Mouse Pancreas (C57BL/6 strain) fixed in 4% PFA for 2 hours at RT, then transferred to 30% sucrose overnight at 4°C before embedding in OCT mounting medium. Treated with TBS containing 5% goat serum and 0.3% Triton X-100, to block unspecific binding sites and permeabilize cell membranes, for 30min at RT. Antibody (bs-0056R-FITC) diluted at 1:100 in TBS containing 2% goat serum applied and incubated overnight at 4°C. Rinse sections in TBS 2x5min on a shaker, mount section with vectorshield (with DAPI), then cover them with coverslips and seal the edge of the coverslip on the slide with nail polish. This image was kindly submitted by an end-user from the National Children's Research Centre, Our Lady's Children's Hospital, Dublin, Ireland.