Will the entire Oris™ assay plate with lid fit in my plate reader? Post date February 15, 2016 Some plate readers have limited clearance and may not accept the plate with the lid on. Was this answer helpful ? Yes / No ← I sometimes see “crescent effects” under the microscope with the Oris™ Detection Mask in place. Is this a problem for quantification using a microplate reader? → What software can I use to quantify cell migration/invasion in images I capture from Oris™ Assays?