aid
analyzing
bag
bank
blood
cardiac
cardiologist
cardiology
care
checking
clinic
doctor
donate
donation
donor
exam
first
health
healthcare
healthy
heart
hematology
hospital
human
infection
lab
laboratory
man
mask
medical
medicine
patient
plasma
protection
protective
red
research
respirator
sample
sampling
science
scientific
surgery
system
technology
testing
transfuse
transfusion
treatment
woman