aid
analyzing
arm
bag
bank
blood
care
checking
clinic
collecting
dna
doctor
donation
donor
gloves
health
healthy
heart
hematology
hospital
infection
lab
laboratory
man
medical
medicine
needle
nurse
patient
plasma
red
research
sample
sampling
storage
supply
surgery
syringe
system
taking
test
testing
transfuse
transfusion
treatment
tube
vein
virus
woman
work