adult
analysis
analyzing
arm
background
bag
ball
blood
bouncy
care
caucasian
clinic
doctor
donate
donating
donation
donor
expertise
hand
healing
health
healthcare
hospital
indoors
injecting
injection
laboratory
male
man
medical
medicine
microscope
needle
nurse
patient
receiving
red
sample
science
sitting
sterile
surgical
syringe
technology
test
transfused
transfusion
vein
volunteer
woman