Ключевые слова: bacteria, bacterium, box, cell, chicken, closeup, concept, container, contamination, crossbones, danger, death, diarrhea, disease, eggs, epidemic, feather, fever, head, health, illness, imprint, infection, mark, medical, medicine, microbe, microbiology, pesticide, poison, pollution, salmonella, salmonellosis, sign, skull, stamp, toxic, virus,