title: Variability of tear protein levels in normal young adults: diurnal (daytime) variation.
abstract: To investigate the diurnal variation (daytime changes) of human tear protein levels, and to compare the results obtained by two sampling methods, the yawn and eye-flush methods.
authors.affiliation: Department of Optometry and Radiography, Hong Kong Polytechnic University, Kowloon, Hong Kong, SAR, China. 96980109r@polyu.edu.hk
authors.forename: V
authors.initials: V
authors.lastname: Ng
authors.forename: P
authors.initials: P
authors.lastname: Cho
authors.forename: F
authors.initials: F
authors.lastname: Wong
authors.forename: Y
authors.initials: Y
authors.lastname: Chan
mesh_terms: D000293:Adolescent; D000328:Adult; D002940:Circadian Rhythm / Q000502:physiology*; D004591:Electrophoresis, Polyacrylamide Gel; D005136:Eye Proteins / Q000378:metabolism*; D005260:Female; D006801:Humans; D008297:Male; D013048:Specimen Handling; D013666:Tears / Q000378:metabolism*
chemical_list: D005136:Eye Proteins; C042434:tear proteins