adult
aids
antibody
attention
blood
blood test
color image
condom
contamination
deficiency
disease
health
hiv
hiv aids
hiv test
hiv testing
hiv1
hiv2
hivnegative
hivpositive
hospital
human
ill
immune
immunodeficiency
infected
infection
injection
lab
laboratory
lentivirus
medical
medicine
negative
patient
positive
prevention
reactive
safe
sample
serum
syndrome
test
testtube
transfer
treatment
tube
virus