alternative
animal
biology
bite
bleeding
blood
bloodsucker
bloodsucking
body
bruising
care
collagenase
cure
dangerous
detail
detoxification
enzymes
healing
health
hirudinization
hirudo
hirudotherapy
hospital
hyaluronidase
illness
invertebrate
leech
leeching
lymph
lytic compound
medical
medicinal
parasite
parasitic
peptidase
procedure
research
skin
small
specimen
suck
sucker
swelling
therapy
treatment
wet