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Results 1 - 3 of 3 for Species
  1. Bacterial Infections (National Library of Medicine)  
    Bacteria are living things that have only one cell. Under a microscope, they look like balls, rods, or spirals. They are so small that a line of 1,000 could fit ...
  2. Foodborne Illness (National Library of Medicine)  
    Each year, around 48 million people in the United States get sick from contaminated food. Common causes include bacteria and viruses. Less often, the cause ...
  3. Mosquito Bites (National Library of Medicine)  
    ... over the world. There are thousands of different species of mosquitoes; about 200 of those live in ...