aid

alveolus

anatomy

artery

bacterium

biology

blood

body

care

cell

circulate

circulation

disease

dna

erythrocyte

flow

fluid

health

hemoglobin

hospital

illness

interior

macro

medical

medicine

micro

microbe

microbiology

microcosmic

microscopic

nano

nucleus

organic

organism

particle

plasma

pustule

red

render

science

sem

sick

sinew

surgery

tube

vascular

vein

vessel

virus

vitality