Variations in the gram staining results caused by air moisture.
D004396:Coloring Agents; D005840:Gentian Violet; D006801:Humans; D006813:Humidity; D010619:Phenazines; D013194:Staining and Labeling
D004396:Coloring Agents; C035863:Gram's stain; D010619:Phenazines; D005840:Gentian Violet
HUMIDITY; STAINS AND STAINING