"Nine-position-test" for proof of even illumination of the light field in fluorescence microspectrophotometry.
D004247:DNA / Q000032:analysis; D005453:Fluorescence; D005898:Glass; D006651:Histocytochemistry; D008029:Lighting; D008297:Male; D013053:Spectrophotometry; D013094:Spermatozoa / Q000032:analysis; D014501:Uranium
D014501:Uranium; D004247:DNA