anesthesia
blood
blood transfusion
cancer
clinic
director
disinfection
doctor
elderly
examination
formation
glasses
hat
health
hospital
illness
improvement
incision
internal organs
life
life extension
male
mask
medical treatment
middleaged and elderly
operation
organ
patient
recovery
resection
scalpel
science
surgery
surgical gown
teacher
technique
technology
tissue
transplant
treatment
treatment clinic
tweezers
upper body
white coat