a change in your body that is a sign of illness
symptom
a very small thing that causes disease in people or animals
virus
microscopic organisms not visible to the eye
bacteria
illness that is caused by bacteria
infection
the smallest part of a human body
cell
an illness of the body of the humans or animals, not infection
disease
medicines that are used for curing infections
antibiotics
to give medicine to make a sick person well again
treat
to keep safe
protect
system in your body that protects you from diseases
immune system
a painful place on the body
sore
to change food in your stomach so that it can be used by your body
digest
