Photometric counting of formalinized erythrocytes.
D004906:Erythrocyte Count; D005557:Formaldehyde / Q000494:pharmacology; D006386:Hemagglutination Tests; D006801:Humans; D010783:Photometry; D013634:Tannins / Q000494:pharmacology
D013634:Tannins; D005557:Formaldehyde