High resolution shading correction.
D001322:Autoanalysis; D002477:Cells / Q000166:cytology*; D003201:Computers; D003202:Computers, Analog; D003936:Diagnosis, Computer-Assisted; D005069:Evaluation Studies as Topic; D006651:Histocytochemistry; D008029:Lighting; D008403:Mass Screening; D008722:Methods; D013194:Staining and Labeling; D013997:Time Factors