the cells and tissues in the body that make it able to protect itself against infection
Immune system
your throat is red and feels painful, especially when you swallow
Sore throat
a substance put into person's body to prevent them getting a disease
Vaccination
Kind type of very small organism that lives in air, earth, water, plants, and animals, often one that causes disease
Bacteria
Feeling or physical or mental change that is caused by a particular disease
Symptom
a medicine or chemical that can destroy harmful bacteria in the body or limit their growth
Antibiotics
the smallest basic unit of a plant or animal
Cell
Bacteria or viruses have entered the body
Infection
to change food in your stomach into substances that your body can use
Digest
extremely small piece of organic material that causes disease in humans, animals, and plants
Viruses