to defend or keep safe; shield from danger or harm.
protect
10
to enter as an enemy, unwelcomed
invade
20
the act of giving someone an injection in order to protect against specific diseases.
vaccinnation
25
These microscopic organisms live in all parts of the earth including oceans, deserts, glaciers, hot springs, and in the bodies of most living things.
bacteria
20
a condition that causes harm to the health of a person, animal, or plant; illness; sickness.
disease
15
something that happens in the body suggesting that there is a disease or disorder.
symptoms
20
feeling or suffering physical pain; hurting.
sore
10
the bodily system of organs, tissues, cells, and cell products, which protects the body by detecting the presence of, and disabling, disease-causing agents in the body.
immune system
20
a tiny organism that can reproduce only in living cells. They cause disease in humans, animals, and plants.
Viruses
20
an illness caused by germs.
infection
20
used to destroy or prevent the growth of bacteria or other disease-causing organisms.
