title: Rapid identification of pneumococci. Gram stain vs. the quellung reaction.
mesh_terms: D000208:Acute Disease; D000328:Adult; D000818:Animals; D001431:Bacteriological Techniques; D005188:False Negative Reactions; D005189:False Positive Reactions; D006801:Humans; D007106:Immune Sera; D011014:Pneumonia / Q000382:microbiology; D011233:Precipitin Tests; D011817:Rabbits / Q000276:immunology; D013183:Sputum / Q000382:microbiology; D013194:Staining and Labeling; D013296:Streptococcus pneumoniae / Q000302:isolation & purification*
chemical_list: D007106:Immune Sera