Examination of smears from an eye swab under the microscope may give an indication of the presence of infection through observation of typical changes in the conjunctival cells. (icatcare.org)
«There are also typical changes in the respiratory system.» (newscientist.com)
The state's decision to change both the way it tests students and the way it translates student scores into a ranking means that dozens of schools saw their standings sink or soar by 50 or more percentage points between 2014 and 2016 — far more movement than experts say can be explained by typical changes in schools from one year to the next. (educationviews.org)